openSUSE Security Update : salt (openSUSE-2021-347) - Nessus

Critical   Plugin ID: 146897

This page contains detailed information about the openSUSE Security Update : salt (openSUSE-2021-347) 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

ID: 146897
Name: openSUSE Security Update : salt (openSUSE-2021-347)
Filename: openSUSE-2021-347.nasl
Vulnerability Published: 2021-02-27
This Plugin Published: 2021-03-01
Last Modification Time: 2021-11-09
Plugin Version: 1.8
Plugin Type: local
Plugin Family: SuSE Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list

Vulnerability Information

Severity: Critical
Vulnerability Published: 2021-02-27
Patch Published: 2021-02-26
CVE [?]: CVE-2020-28243, CVE-2020-28972, CVE-2020-35662, CVE-2021-3144, CVE-2021-3148, CVE-2021-3197, CVE-2021-25281, CVE-2021-25282, CVE-2021-25283, CVE-2021-25284
CPE [?]: cpe:/o:novell:opensuse:15.2, p-cpe:/a:novell:opensuse:python2-salt, p-cpe:/a:novell:opensuse:python3-salt, p-cpe:/a:novell:opensuse:salt, p-cpe:/a:novell:opensuse:salt-api, p-cpe:/a:novell:opensuse:salt-bash-completion, p-cpe:/a:novell:opensuse:salt-cloud, p-cpe:/a:novell:opensuse:salt-fish-completion, p-cpe:/a:novell:opensuse:salt-master, p-cpe:/a:novell:opensuse:salt-minion, p-cpe:/a:novell:opensuse:salt-proxy, p-cpe:/a:novell:opensuse:salt-ssh, p-cpe:/a:novell:opensuse:salt-standalone-formulas-configuration, p-cpe:/a:novell:opensuse:salt-syndic, p-cpe:/a:novell:opensuse:salt-zsh-completion

Synopsis

The remote openSUSE host is missing a security update.

Description

This update for salt fixes the following issues :

- Fix regression on cmd.run when passing tuples as cmd (bsc#1182740)

- Allow `extra_filerefs` as sanitized `kwargs` for SSH client

- Fix errors with virt.update

- Fix for multiple for security issues (CVE-2020-28243) (CVE-2020-28972) (CVE-2020-35662) (CVE-2021-3148) (CVE-2021-3144) (CVE-2021-25281) (CVE-2021-25282) (CVE-2021-25283) (CVE-2021-25284) (CVE-2021-3197) (bsc#1181550) (bsc#1181556) (bsc#1181557) (bsc#1181558) (bsc#1181559) (bsc#1181560) (bsc#1181561) (bsc#1181562) (bsc#1181563) (bsc#1181564) (bsc#1181565)

- virt: search for `grub.xen` path

- Xen spicevmc, DNS SRV records backports :

- Fix virtual network generated DNS XML for SRV records

- Don't add spicevmc channel to xen VMs

- virt UEFI fix: virt.update when `efi=True`

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Solution

Update the affected salt packages.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the openSUSE Security Update : salt (openSUSE-2021-347) vulnerability:

  1. Metasploit: exploit/linux/http/saltstack_salt_wheel_async_rce
    [SaltStack Salt API Unauthenticated RCE through wheel_async client]
  2. GitHub: https://github.com/EdgeSecurityTeam/Vulnerability
    [CVE-2021-25281]
  3. GitHub: https://github.com/0ps/pocassistdb
    [CVE-2021-25282]
  4. GitHub: https://github.com/jweny/pocassistdb
    [CVE-2021-25282]
  5. GitHub: https://github.com/stealthcopter/CVE-2020-28243
    [CVE-2020-28243: CVE-2020-28243 Local Privledge Escalation Exploit in SaltStack Minion]
  6. GitHub: https://github.com/Immersive-Labs-Sec/CVE-2021-25281
    [CVE-2021-25281: Chaining CVE-2021-25281 and CVE-2021-25282 to exploit a SaltStack]
  7. GitHub: https://github.com/SkyBulk/CVE-2021-25281
    [CVE-2021-25281: Demo testing CVE-2021-25281]
  8. GitHub: https://github.com/Immersive-Labs-Sec/CVE-2021-25281
    [CVE-2021-25282: Chaining CVE-2021-25281 and CVE-2021-25282 to exploit a SaltStack]

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-2021-3197
CVSS V2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:F/RL:OF/RC:C
CVSS Base Score:7.5 (High)
Impact Subscore:6.4
Exploitability Subscore:10.0
CVSS Temporal Score:6.2 (Medium)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:6.2 (Medium)
CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
CVSS Base Score:9.8 (Critical)
Impact Subscore:5.9
Exploitability Subscore:3.9
CVSS Temporal Score:9.1 (Critical)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:9.1 (Critical)
STIG Severity [?]: I
STIG Risk Rating: High

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Plugin Source

This is the openSUSE-2021-347.nasl nessus plugin source code. This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof. 

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2021-347.
#
# The text description of this plugin is (C) SUSE LLC.
#

include('compat.inc');

if (description)
{
  script_id(146897);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/11/09");

  script_cve_id(
    "CVE-2020-28243",
    "CVE-2020-28972",
    "CVE-2020-35662",
    "CVE-2021-25281",
    "CVE-2021-25282",
    "CVE-2021-25283",
    "CVE-2021-25284",
    "CVE-2021-3144",
    "CVE-2021-3148",
    "CVE-2021-3197"
  );
  script_xref(name:"IAVA", value:"2021-A-0112-S");

  script_name(english:"openSUSE Security Update : salt (openSUSE-2021-347)");

  script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"This update for salt fixes the following issues :

  - Fix regression on cmd.run when passing tuples as cmd
    (bsc#1182740)

  - Allow `extra_filerefs` as sanitized `kwargs` for SSH
    client

  - Fix errors with virt.update

  - Fix for multiple for security issues (CVE-2020-28243)
    (CVE-2020-28972) (CVE-2020-35662) (CVE-2021-3148)
    (CVE-2021-3144) (CVE-2021-25281) (CVE-2021-25282)
    (CVE-2021-25283) (CVE-2021-25284) (CVE-2021-3197)
    (bsc#1181550) (bsc#1181556) (bsc#1181557) (bsc#1181558)
    (bsc#1181559) (bsc#1181560) (bsc#1181561) (bsc#1181562)
    (bsc#1181563) (bsc#1181564) (bsc#1181565)

  - virt: search for `grub.xen` path

  - Xen spicevmc, DNS SRV records backports :

  - Fix virtual network generated DNS XML for SRV records

  - Don't add spicevmc channel to xen VMs

  - virt UEFI fix: virt.update when `efi=True` 

This update was imported from the SUSE:SLE-15-SP2:Update update
project.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181550");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181556");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181557");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181558");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181559");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181560");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181561");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181562");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181563");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181564");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1181565");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1182740");
  script_set_attribute(attribute:"solution", value:
"Update the affected salt packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3197");

  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:'SaltStack Salt API Unauthenticated RCE through wheel_async client');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/02/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/02/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python2-salt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python3-salt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-bash-completion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-cloud");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-fish-completion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-master");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-minion");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-proxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-ssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-standalone-formulas-configuration");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-syndic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:salt-zsh-completion");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.2");
  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_family(english:"SuSE Local Security Checks");

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

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE15\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.2", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.2", reference:"python2-salt-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"python3-salt-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-api-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-bash-completion-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-cloud-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-fish-completion-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-master-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-minion-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-proxy-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-ssh-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-standalone-formulas-configuration-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-syndic-3000-lp152.3.27.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"salt-zsh-completion-3000-lp152.3.27.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "python2-salt / python3-salt / salt / salt-api / etc");
}

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

  • Linux / Unix:
    /opt/nessus/lib/nessus/plugins/openSUSE-2021-347.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\openSUSE-2021-347.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/openSUSE-2021-347.nasl

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How to Run

Here is how to run the openSUSE Security Update : salt (openSUSE-2021-347) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select SuSE Local Security Checks plugin family.
  6. On the right side table select openSUSE Security Update : salt (openSUSE-2021-347) plugin ID 146897.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. 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 openSUSE-2021-347.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a openSUSE-2021-347.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - openSUSE-2021-347.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 openSUSE-2021-347.nasl -t <IP/HOST>

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References

IAVA | Information Assurance Vulnerability Alert:
  • 2021-A-0112-S
See also: Similar and related Nessus plugins:
  • 143512 - Debian DLA-2480-2 : salt regression update
  • 155123 - Debian DLA-2815-1 : salt - LTS security update
  • 155634 - Debian DSA-5011-1 : salt - security update
  • 146977 - Fedora 33 : salt (2021-5756fbf8a6)
  • 146970 - Fedora 32 : salt (2021-904a2dbc0c)
  • 146985 - FreeBSD : salt -- multiple vulnerabilities (a1e03a3d-7be0-11eb-b392-20cf30e32f6d)
  • 148273 - GLSA-202103-01 : Salt: Multiple vulnerabilities
  • 146877 - Photon OS 1.0: Salt3 PHSA-2021-1.0-0364
  • 146878 - Photon OS 1.0: Salt PHSA-2021-1.0-0364
  • 146874 - Photon OS 3.0: Salt3 PHSA-2021-3.0-0200
  • 150920 - Photon OS 4.0: Salt3 PHSA-2021-4.0-0047
  • 148112 - SaltStack < 3002.5 Multiple Vulnerabilities
  • 146921 - SUSE SLES15 Security Update : salt (SUSE-SU-2021:0628-1)
  • 146904 - SUSE SLED15 / SLES15 Security Update : salt (SUSE-SU-2021:0630-1)
  • 146885 - SUSE SLES15 Security Update : salt (SUSE-SU-2021:0631-1)
  • 150586 - SUSE SLES11 Security Update : salt (SUSE-SU-2021:14650-1)
  • 154285 - openSUSE 15 Security Update : xstream (openSUSE-SU-2021:3476-1)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file openSUSE-2021-347.nasl version 1.8. For more plugins, visit the Nessus Plugin Library.

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