SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1) - Nessus

High Plugin ID: 151878

This page contains detailed information about the SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 151878
Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1)
Filename: suse_SU-2021-2406-1.nasl
Vulnerability Published: 2021-04-20
This Plugin Published: 2021-07-21
Last Modification Time: 2022-01-20
Plugin Version: 1.5
Plugin Type: local
Plugin Family: SuSE Local Security Checks
Dependencies: linux_alt_patch_detect.nasl, ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list

Vulnerability Information

Severity: High
Vulnerability Published: 2021-04-20
Patch Published: 2021-07-20
CVE [?]: CVE-2020-24586, CVE-2020-24587, CVE-2020-24588, CVE-2020-26139, CVE-2020-26141, CVE-2020-26145, CVE-2020-26147, CVE-2020-26558, CVE-2020-36385, CVE-2020-36386, CVE-2021-0129, CVE-2021-0512, CVE-2021-0605, CVE-2021-3609, CVE-2021-22555, CVE-2021-23134, CVE-2021-32399, CVE-2021-33034, CVE-2021-33909, CVE-2021-34693
CPE [?]: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:kernel-default, p-cpe:/a:novell:suse_linux:kernel-default-base, p-cpe:/a:novell:suse_linux:kernel-default-devel, p-cpe:/a:novell:suse_linux:kernel-devel, p-cpe:/a:novell:suse_linux:kernel-macros, p-cpe:/a:novell:suse_linux:kernel-source, p-cpe:/a:novell:suse_linux:kernel-syms
Exploited by Malware: True

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2406-1 advisory.

- The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data. (CVE-2020-24586)

- The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed. (CVE-2020-24587)

- The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets. (CVE-2020-24588)

- An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients. (CVE-2020-26139)

- An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The Wi-Fi implementation does not verify the Message Integrity Check (authenticity) of fragmented TKIP frames. An adversary can abuse this to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data- confidentiality protocol. (CVE-2020-26141)

- An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3 implementations accept second (or subsequent) broadcast fragments even when sent in plaintext and process them as full unfragmented frames. An adversary can abuse this to inject arbitrary network packets independent of the network configuration. (CVE-2020-26145)

- An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used. (CVE-2020-26147)

- Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time. (CVE-2020-26558)

- An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after- free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c. (CVE-2020-36385)

- An issue was discovered in the Linux kernel before 5.8.1. net/bluetooth/hci_event.c has a slab out-of- bounds read in hci_extended_inquiry_result_evt, aka CID-51c19bf3d5cf. (CVE-2020-36386)

- Improper access control in BlueZ may allow an authenticated user to potentially enable information disclosure via adjacent access. (CVE-2021-0129)

- In __hidinput_change_resolution_multipliers of hid-input.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-173843328References: Upstream kernel (CVE-2021-0512)

- In pfkey_dump of af_key.c, there is a possible out-of-bounds read due to a missing bounds check. This could lead to local information disclosure in the kernel with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-110373476 (CVE-2021-0605)

- A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space (CVE-2021-22555)

- Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability. (CVE-2021-23134)

- net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller. (CVE-2021-32399)

- In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value. (CVE-2021-33034)

- fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05. (CVE-2021-33909)

- net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized. (CVE-2021-34693)

- To fix this vulnerability, update the affected packages: linux linux-esx (CVE-2021-3609)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1) vulnerability:

Metasploit: exploit/linux/local/netfilter_xtables_heap_oob_write_priv_esc
[Netfilter x_tables Heap OOB Write Privilege Escalation]
Exploit-DB: exploits/linux/local/50135.c
[EDB-50135: Linux Kernel 2.6.19 < 5.9 - 'Netfilter Local Privilege Escalation]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-24586]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-24587]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-24588]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26139]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26145]
GitHub: https://github.com/vanhoefm/fragattacks
[CVE-2020-26147]
GitHub: https://github.com/AlAIAL90/CVE-2020-26558
[CVE-2020-26558: PoC for exploiting CVE-2020-26558 : Bluetooth LE and BR/EDR secure pairing in ...]
GitHub: https://github.com/engn33r/awesome-bluetooth-security
[CVE-2020-26558]
GitHub: https://github.com/JamesGeeee/CVE-2020-36385
[CVE-2020-36385: PoC for exploiting CVE-2020-36385]
GitHub: https://github.com/PwnCast/CVE-2020-36385
[CVE-2020-36385: PoC for exploiting CVE-2020-36385 : An issue was discovered in the Linux kernel ...]
GitHub: https://github.com/JamesGeeee/CVE-2020-36386
[CVE-2020-36386: PoC for exploiting CVE-2020-36386]
GitHub: https://github.com/artsking/linux-3.0.35_CVE-2020-36386_withPatch
[CVE-2020-36386]
GitHub: https://github.com/artsking/linux-4.1.15_CVE-2020-36386_withPatch
[CVE-2020-36386]
GitHub: https://github.com/madhans23/kernel_imx_4.1.15-CVE-2020-36386_noPatch
[CVE-2020-36386]
GitHub: https://github.com/AlAIAL90/CVE-2021-0129
[CVE-2021-0129: PoC for exploiting CVE-2021-0129 : Improper access control in BlueZ may allow an ...]
GitHub: https://github.com/xairy/linux-kernel-exploitation
[CVE-2021-3609]
GitHub: https://github.com/Al1ex/LinuxEelvation
[CVE-2021-22555]
GitHub: https://github.com/ChoKyuWon/exploit_articles
[CVE-2021-22555]
GitHub: https://github.com/EGI-Federation/SVG-advisories
[CVE-2021-22555]
GitHub: https://github.com/JoneyJunior/cve-2021-22555
[CVE-2021-22555]
GitHub: https://github.com/JustYoomoon/CVE-2021-22555-Exploit
[CVE-2021-22555: CVE-2021-22555 Exploit]
GitHub: https://github.com/Metarget/awesome-cloud-native-security
[CVE-2021-22555]
GitHub: https://github.com/Metarget/metarget
[CVE-2021-22555]
GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
[CVE-2021-22555]
GitHub: https://github.com/YunDingLab/struct_sanitizer
[CVE-2021-22555]
GitHub: https://github.com/bcoles/kasld
[CVE-2021-22555]
GitHub: https://github.com/bcoles/kernel-exploits
[CVE-2021-22555]
GitHub: https://github.com/bsauce/kernel-exploit-factory
[CVE-2021-22555]
GitHub: https://github.com/bsauce/kernel-security-learning
[CVE-2021-22555]
GitHub: https://github.com/cgwalters/container-cve-2021-22555
[CVE-2021-22555]
GitHub: https://github.com/cpuu/LinuxKernelCVE
[CVE-2021-22555]
GitHub: https://github.com/ctrsploit/ctrsploit
[CVE-2021-22555]
GitHub: https://github.com/daletoniris/CVE-2021-22555-esc-priv
[CVE-2021-22555]
GitHub: https://github.com/hacking-kubernetes/hacking-kubernetes.info
[CVE-2021-22555]
GitHub: https://github.com/joydo/CVE-Writeups
[CVE-2021-22555]
GitHub: https://github.com/reni2study/Cloud-Native-Security2
[CVE-2021-22555]
GitHub: https://github.com/ssst0n3/ctrsploit_archived
[CVE-2021-22555]
GitHub: https://github.com/veritas501/CVE-2021-22555-PipeVersion
[CVE-2021-22555: CVE-2021-22555 exploit rewritten with pipe primitive]
GitHub: https://github.com/xairy/linux-kernel-exploitation
[CVE-2021-22555]
GitHub: https://github.com/xyjl-ly/CVE-2021-22555-Exploit
[CVE-2021-22555]
GitHub: https://github.com/nanopathi/linux-4.19.72_CVE-2021-32399
[CVE-2021-32399]
GitHub: https://github.com/Trinadh465/device_renesas_kernel_AOSP10_r33_CVE-2021-33034
[CVE-2021-33034]
GitHub: https://github.com/artsking/linux-4.1.15_CVE-2021-33034_withPatch
[CVE-2021-33034]
GitHub: https://github.com/AlAIAL90/CVE-2021-33909
[CVE-2021-33909: PoC for exploiting CVE-2021-33909 : fs/seq_file.c in the Linux kernel 3.16 through ...]
GitHub: https://github.com/AmIAHuman/CVE-2021-33909
[CVE-2021-33909: Sequoia exploit (7/20/21)]
GitHub: https://github.com/ChoKyuWon/exploit_articles
[CVE-2021-33909]
GitHub: https://github.com/EGI-Federation/SVG-advisories
[CVE-2021-33909]
GitHub: https://github.com/H0j3n/EzpzCheatSheet
[CVE-2021-33909]
GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
[CVE-2021-33909]
GitHub: https://github.com/gitezri/LinuxVulnerabilities
[CVE-2021-33909]
GitHub: https://github.com/hac425xxx/heap-exploitation-in-real-world
[CVE-2021-33909]
GitHub: https://github.com/ikramimamoglu/AmIAHuman-CVE-2021-33909
[CVE-2021-33909]
GitHub: https://github.com/joydo/CVE-Writeups
[CVE-2021-33909]
GitHub: https://github.com/kaosagnt/ansible-everyday
[CVE-2021-33909]
GitHub: https://github.com/sfowl/deep-directory
[CVE-2021-33909]
GitHub: https://github.com/xairy/linux-kernel-exploitation
[CVE-2021-33909]
GitHub: https://github.com/baerwolf/cve-2021-33909
[CVE-2021-33909: This module fixes an issue in the kernels filesystem layer (CVE-2021-33909) by ...]
GitHub: https://github.com/bbinfosec43/CVE-2021-33909
[CVE-2021-33909: Exploit code for CVE-2021-33909,Just a dump of removed https://github.com/AmIAHuman/ ...]
GitHub: https://github.com/ChrisTheCoolHut/CVE-2021-33909
[CVE-2021-33909: CVE-2021-33909 Sequoia]
GitHub: https://github.com/Liang2580/CVE-2021-33909
[CVE-2021-33909: Sequoia exploit (7/20/21)]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2021-33909
CVSS V2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C

CVSS Base Score:	7.2 (High)
Impact Subscore:	10.0
Exploitability Subscore:	3.9
CVSS Temporal Score:	6.3 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.3 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CVSS Base Score:	7.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.8
CVSS Temporal Score:	7.5 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.5 (High)

STIG Severity [?]: II
STIG Risk Rating: Medium

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Plugin Source

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2021:2406-1. The text itself
# is copyright (C) SUSE.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(151878);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/20");

  script_cve_id(
    "CVE-2020-24586",
    "CVE-2020-24587",
    "CVE-2020-24588",
    "CVE-2020-26139",
    "CVE-2020-26141",
    "CVE-2020-26145",
    "CVE-2020-26147",
    "CVE-2020-26558",
    "CVE-2020-36385",
    "CVE-2020-36386",
    "CVE-2021-0129",
    "CVE-2021-0512",
    "CVE-2021-0605",
    "CVE-2021-3609",
    "CVE-2021-22555",
    "CVE-2021-23134",
    "CVE-2021-32399",
    "CVE-2021-33034",
    "CVE-2021-33909",
    "CVE-2021-34693"
  );
  script_xref(name:"SuSE", value:"SUSE-SU-2021:2406-1");
  script_xref(name:"IAVA", value:"2021-A-0350");

  script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in
the SUSE-SU-2021:2406-1 advisory.

  - The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent
    Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a
    network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP,
    CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.
    (CVE-2020-24586)

  - The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent
    Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary
    can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP,
    CCMP, or GCMP encryption key is periodically renewed. (CVE-2020-24587)

  - The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent
    Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated.
    Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an
    adversary can abuse this to inject arbitrary network packets. (CVE-2020-24588)

  - An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other
    clients even though the sender has not yet successfully authenticated to the AP. This might be abused in
    projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier
    to exploit other vulnerabilities in connected clients. (CVE-2020-26139)

  - An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The Wi-Fi implementation
    does not verify the Message Integrity Check (authenticity) of fragmented TKIP frames. An adversary can
    abuse this to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-
    confidentiality protocol. (CVE-2020-26141)

  - An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3
    implementations accept second (or subsequent) broadcast fragments even when sent in plaintext and process
    them as full unfragmented frames. An adversary can abuse this to inject arbitrary network packets
    independent of the network configuration. (CVE-2020-26145)

  - An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble
    fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject
    packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP,
    CCMP, or GCMP data-confidentiality protocol is used. (CVE-2020-26147)

  - Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby
    man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication
    procedure) by reflection of the public key and the authentication evidence of the initiating device,
    potentially permitting this attacker to complete authenticated pairing with the responding device using
    the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit
    at a time. (CVE-2020-26558)

  - An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-
    free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is
    called, aka CID-f5449e74802c. (CVE-2020-36385)

  - An issue was discovered in the Linux kernel before 5.8.1. net/bluetooth/hci_event.c has a slab out-of-
    bounds read in hci_extended_inquiry_result_evt, aka CID-51c19bf3d5cf. (CVE-2020-36386)

  - Improper access control in BlueZ may allow an authenticated user to potentially enable information
    disclosure via adjacent access. (CVE-2021-0129)

  - In __hidinput_change_resolution_multipliers of hid-input.c, there is a possible out of bounds write due to
    a heap buffer overflow. This could lead to local escalation of privilege with no additional execution
    privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android
    kernelAndroid ID: A-173843328References: Upstream kernel (CVE-2021-0512)

  - In pfkey_dump of af_key.c, there is a possible out-of-bounds read due to a missing bounds check. This
    could lead to local information disclosure in the kernel with System execution privileges needed. User
    interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-110373476
    (CVE-2021-0605)

  - A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
    This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name
    space (CVE-2021-22555)

  - Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to
    elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local
    user with the CAP_NET_RAW capability. (CVE-2021-23134)

  - net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI
    controller. (CVE-2021-32399)

  - In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an
    hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value. (CVE-2021-33034)

  - fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer
    allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an
    unprivileged user, aka CID-8cae8cd89f05. (CVE-2021-33909)

  - net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from
    kernel stack memory because parts of a data structure are uninitialized. (CVE-2021-34693)

  - To fix this vulnerability, update the affected packages: linux linux-esx (CVE-2021-3609)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1179610");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1180846");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1184611");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185859");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185860");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185861");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185862");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185863");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185898");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185987");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186060");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186062");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186111");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186390");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1186463");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187038");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187050");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187215");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187452");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187595");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187601");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187934");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188062");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188116");
  # https://lists.suse.com/pipermail/sle-security-updates/2021-July/009166.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?daa209a8");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-24586");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-24587");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-24588");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-26139");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-26141");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-26145");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-26147");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-26558");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-36385");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-36386");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-0129");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-0512");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-0605");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-22555");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-23134");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-32399");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-33034");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-33909");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-34693");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-3609");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-33909");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Netfilter x_tables Heap OOB Write Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/04/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/07/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-default-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-macros");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-syms");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');
include('rpm.inc');
include('ksplice.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES12', 'SUSE ' + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE ' + os_ver, cpu);

var sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2", os_ver + " SP" + sp);

var pkgs = [
    {'reference':'kernel-default-4.4.121-92.158.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-12.2'},
    {'reference':'kernel-default-base-4.4.121-92.158.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-12.2'},
    {'reference':'kernel-default-devel-4.4.121-92.158.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-12.2'},
    {'reference':'kernel-devel-4.4.121-92.158.1', 'sp':'2', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-12.2'},
    {'reference':'kernel-macros-4.4.121-92.158.1', 'sp':'2', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-12.2'},
    {'reference':'kernel-source-4.4.121-92.158.1', 'sp':'2', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-12.2'},
    {'reference':'kernel-syms-4.4.121-92.158.1', 'sp':'2', 'cpu':'x86_64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'sles-release-12.2'}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var release = NULL;
  var sp = NULL;
  var cpu = NULL;
  var exists_check = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && release) {
    if (exists_check) {
      if (!rpm_exists(release:release, rpm:exists_check)) continue;
      if ('ltss' >< tolower(exists_check)) ltss_caveat_required = TRUE;
    }
    if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel-default / kernel-default-base / kernel-default-devel / etc');
}

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/suse_SU-2021-2406-1.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\suse_SU-2021-2406-1.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/suse_SU-2021-2406-1.nasl

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How to Run

Here is how to run the SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select SuSE Local Security Checks plugin family.
On the right side table select SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1) plugin ID 151878.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl suse_SU-2021-2406-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a suse_SU-2021-2406-1.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - suse_SU-2021-2406-1.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state suse_SU-2021-2406-1.nasl -t <IP/HOST>

Go back to menu.

References

IAVA | Information Assurance Vulnerability Alert:

2021-A-0350

SuSE Security Advisory:

SUSE-SU-2021:2406-1

See also:

Similar and related Nessus plugins:

151846 - RHEL 8 : kernel (RHSA-2021:2714)
151847 - openSUSE 15 Security Update : kernel (openSUSE-SU-2021:2415-1)
151850 - RHEL 8 : kpatch-patch (RHSA-2021:2723)
151851 - openSUSE 15 Security Update : kernel (openSUSE-SU-2021:2409-1)
151856 - RHEL 8 : kernel-rt (RHSA-2021:2719)
151857 - RHEL 8 : kernel (RHSA-2021:2718)
151858 - RHEL 7 : kernel (RHSA-2021:2732)
151859 - RHEL 7 : kernel (RHSA-2021:2734)
151862 - RHEL 8 : kernel (RHSA-2021:2722)
151863 - RHEL 7 : kpatch-patch (RHSA-2021:2727)
151864 - RHEL 8 : kpatch-patch (RHSA-2021:2716)
151867 - RHEL 7 : kernel (RHSA-2021:2730)
151870 - SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:2415-1)
151871 - RHEL 8 : kernel-rt (RHSA-2021:2715)
151872 - RHEL 8 : kpatch-patch (RHSA-2021:2720)
151873 - SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2021:2416-1)
151877 - SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2407-1)
151879 - CentOS 8 : kernel (CESA-2021:2714)
151880 - SUSE SLES15 Security Update : kernel (SUSE-SU-2021:2408-1)
151884 - SUSE SLES15 Security Update : kernel (SUSE-SU-2021:2409-1)
151886 - RHEL 7 : kernel-rt (RHSA-2021:2726)
151887 - RHEL 7 : kpatch-patch (RHSA-2021:2729)
151888 - RHEL 7 : kernel (RHSA-2021:2725)
151889 - RHEL 7 : kernel (RHSA-2021:2728)
151890 - Debian DSA-4941-1 : linux - security update
151891 - Debian DLA-2713-1 : linux - LTS security update
151897 - Slackware 14.2 : Slackware 14.2 kernel (SSA:2021-202-01)
151907 - Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-5016-1)
151917 - Oracle Linux 8 : kernel (ELSA-2021-2714)
151920 - Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-5018-1)
151921 - Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5015-1)
151926 - Oracle Linux 7 : kernel (ELSA-2021-2725)
151929 - RHEL 7 : RHV-H security update (redhat-virtualization-host) 4.3.17 (Important) (RHSA-2021:2737)
151931 - Amazon Linux 2 : kernel (ALAS-2021-1691)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file suse_SU-2021-2406-1.nasl version 1.5. For more plugins, visit the Nessus Plugin Library.

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SUSE SLES12 Security Update : kernel (SUSE-SU-2021:2406-1) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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