Oracle Solaris Critical Patch Update : oct2020_SRU11_3_36_23_0 - Nessus

Critical Plugin ID: 141772

This page contains detailed information about the Oracle Solaris Critical Patch Update : oct2020_SRU11_3_36_23_0 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: 141772
Name: Oracle Solaris Critical Patch Update : oct2020_SRU11_3_36_23_0
Filename: solaris_oct2020_SRU11_3_36_23_0.nasl
Vulnerability Published: 2020-10-21
This Plugin Published: 2020-10-21
Last Modification Time: 2022-01-24
Plugin Version: 1.9
Plugin Type: local
Plugin Family: Solaris Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/local_checks_enabled, Host/Solaris11/release

Vulnerability Information

Severity: Critical
Vulnerability Published: 2020-10-21
Patch Published: 2020-10-01
CVE [?]: CVE-2020-14871
CPE [?]: cpe:/o:oracle:solaris:11.3

Synopsis

The remote Solaris system is missing a security patch from CPU oct2020.

Description

This Solaris system is missing necessary patches to address a critical security update :

- Vulnerability in the Oracle Solaris product of Oracle Systems (component: Pluggable authentication module). Supported versions that are affected are 10 and 11. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Solaris. While the vulnerability is in Oracle Solaris, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle Solaris. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). (CVE-2020-14871)

Solution

Install the oct2020 CPU from the Oracle support website.

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 Oracle Solaris Critical Patch Update : oct2020_SRU11_3_36_23_0 vulnerability:

Metasploit: exploit/solaris/ssh/pam_username_bof
[Oracle Solaris SunSSH PAM parse_user_name() Buffer Overflow]
Exploit-DB: exploits/solaris/remote/49261.c
[EDB-49261: Solaris SunSSH 11.0 x86 - libpam Remote Root]
Exploit-DB: exploits/solaris/remote/49896.py
[EDB-49896: Solaris SunSSH 11.0 x86 - libpam Remote Root (2)]
Exploit-DB: exploits/solaris/remote/50039.py
[EDB-50039: Solaris SunSSH 11.0 x86 - libpam Remote Root (3)]
GitHub: https://github.com/hackerhouse-opensource/exploits
[CVE-2020-14871]
GitHub: https://github.com/robidev/CVE-2020-14871-Exploit
[CVE-2020-14871: This is a basic ROP based exploit for CVE 2020-14871. CVE 2020-14871 is a ...]

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 V2 Vector [?]: AV:N/AC:L/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C

CVSS Base Score:	10.0 (High)
Impact Subscore:	10.0
Exploitability Subscore:	10.0
CVSS Temporal Score:	8.7 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.7 (High)

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

CVSS Base Score:	10.0 (Critical)
Impact Subscore:	6.0
Exploitability Subscore:	3.9
CVSS Temporal Score:	9.5 (Critical)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	9.5 (Critical)

STIG Severity [?]: I
STIG Risk Rating: High

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Plugin Source

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the Oracle CPU for oct2020.
#
include("compat.inc");

if (description)
{
  script_id(141772);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/24");

  script_cve_id("CVE-2020-14871");
  script_xref(name:"IAVA", value:"2020-A-0485-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");

  script_name(english:"Oracle Solaris Critical Patch Update : oct2020_SRU11_3_36_23_0");
  script_summary(english:"Check for the oct2020 CPU");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote Solaris system is missing a security patch from CPU
oct2020."
  );
  script_set_attribute(
    attribute:"description",
    value:
"This Solaris system is missing necessary patches to address a critical
security update :

  - Vulnerability in the Oracle Solaris product of Oracle
    Systems (component: Pluggable authentication module).
    Supported versions that are affected are 10 and 11.
    Easily exploitable vulnerability allows unauthenticated
    attacker with network access via multiple protocols to
    compromise Oracle Solaris. While the vulnerability is in
    Oracle Solaris, attacks may significantly impact
    additional products. Successful attacks of this
    vulnerability can result in takeover of Oracle Solaris.
    CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and
    Availability impacts). CVSS Vector:
    (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
    (CVE-2020-14871)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.oracle.com/epmos/faces/DocumentDisplay?id=2711819.1"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.oracle.com/a/tech/docs/cpuoct2020cvrf.xml"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.oracle.com/security-alerts/cpuoct2020.html"
  );
  script_set_attribute(
    attribute:"solution",
    value:"Install the oct2020 CPU from the Oracle support website."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Oracle Solaris SunSSH PAM parse_user_name() Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:solaris:11.3");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/10/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/10/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/10/21");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Solaris Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Solaris11/release");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("solaris.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Solaris11/release");
if (isnull(release)) audit(AUDIT_OS_NOT, "Solaris11");


fix_release = "0.5.11-0.175.3.36.0.23.0";

flag = 0;

if (solaris_check_release(release:"0.5.11-0.175.3.36.0.23.0", sru:"11.3.36.23.0") > 0) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:solaris_get_report2());
  else security_hole(0);
  exit(0);
}
audit(AUDIT_OS_RELEASE_NOT, "Solaris", fix_release, release);

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/solaris_oct2020_SRU11_3_36_23_0.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\solaris_oct2020_SRU11_3_36_23_0.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/solaris_oct2020_SRU11_3_36_23_0.nasl

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How to Run

Here is how to run the Oracle Solaris Critical Patch Update : oct2020_SRU11_3_36_23_0 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 Solaris Local Security Checks plugin family.
On the right side table select Oracle Solaris Critical Patch Update : oct2020_SRU11_3_36_23_0 plugin ID 141772.
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 solaris_oct2020_SRU11_3_36_23_0.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a solaris_oct2020_SRU11_3_36_23_0.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - solaris_oct2020_SRU11_3_36_23_0.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 solaris_oct2020_SRU11_3_36_23_0.nasl -t <IP/HOST>

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References

IAVA | Information Assurance Vulnerability Alert:

2020-A-0485-S

See also:

Similar and related Nessus plugins:

141557 - Solaris 10 (sparc) : 153074-01
141553 - Solaris 10 (x86) : 153075-01
141773 - Oracle Solaris Critical Patch Update : oct2020_SRU11_4_24_75_2
142712 - Oracle Solaris PAM parse_user_name() buffer overflow (CVE-2020-14871)
109176 - Oracle Solaris Critical Patch Update : apr2018_SRU11_3_31_6_0 (Spectre)
135667 - Oracle Solaris Critical Patch Update : apr2020_SRU11_3_36_20_0
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Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file solaris_oct2020_SRU11_3_36_23_0.nasl version 1.9. For more plugins, visit the Nessus Plugin Library.

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Oracle Solaris Critical Patch Update : oct2020_SRU11_3_36_23_0 - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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