SaltStack < 3002.5 Multiple Vulnerabilities - Nessus
Critical Plugin ID: 148112This page contains detailed information about the SaltStack < 3002.5 Multiple Vulnerabilities Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.
Plugin Overview
ID: 148112
Name: SaltStack < 3002.5 Multiple Vulnerabilities
Filename: saltstack_3002_5_multiple_vulnerabilities.nasl
Vulnerability Published: 2021-02-25
This Plugin Published: 2021-03-25
Last Modification Time: 2021-11-09
Plugin Version: 1.6
Plugin Type: local
Plugin Family: Misc.
Dependencies:
saltstack_salt_linux_installed.nbin
Required KB Items [?]: installed_sw/SaltStack Salt Master
Vulnerability Information
Severity: Critical
Vulnerability Published: 2021-02-25
Patch Published: 2021-02-25
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:/a:saltstack:salt
Synopsis
The version of SaltStack running on the remote server is affected by multiple vulnerabilities.
Description
According to its self-reported version number, the instance of SaltStack hosted on the remote server is affected by multiple vulnerabilities:
- The Salt-API���s SSH client is vulnerable to a shell injection by including ProxyCommand in an argument, or via ssh_options provided in an API request. (CVE-2021-3197)
- The Salt-API does not have eAuth credentials for the wheel_async client. Thus, an attacker can remotely run any wheel modules on the master. (CVE-2021-25281)
- eauth tokens can be used once after expiration. They can be used to run command against the salt master or minions. (CVE-2021-3144)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
Solution
Upgrade to SaltStack version referenced in the vendor security advisory.
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 SaltStack < 3002.5 Multiple Vulnerabilities vulnerability:
- Metasploit: exploit/linux/http/saltstack_salt_wheel_async_rce
[SaltStack Salt API Unauthenticated RCE through wheel_async client] - GitHub: https://github.com/EdgeSecurityTeam/Vulnerability
[CVE-2021-25281] - GitHub: https://github.com/0ps/pocassistdb
[CVE-2021-25282] - GitHub: https://github.com/jweny/pocassistdb
[CVE-2021-25282] - GitHub: https://github.com/stealthcopter/CVE-2020-28243
[CVE-2020-28243: CVE-2020-28243 Local Privledge Escalation Exploit in SaltStack Minion] - 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] - GitHub: https://github.com/SkyBulk/CVE-2021-25281
[CVE-2021-25281: Demo testing CVE-2021-25281] - 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-2020-28243
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 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 Risk Rating: High
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Plugin Source
This is the saltstack_3002_5_multiple_vulnerabilities.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.
##
include('compat.inc');
if (description)
{
script_id(148112);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/11/09");
script_cve_id(
"CVE-2020-28243",
"CVE-2020-28972",
"CVE-2020-35662",
"CVE-2021-3144",
"CVE-2021-3148",
"CVE-2021-3197",
"CVE-2021-25281",
"CVE-2021-25282",
"CVE-2021-25283",
"CVE-2021-25284"
);
script_xref(name:"IAVA", value:"2021-A-0112-S");
script_name(english:"SaltStack < 3002.5 Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"The version of SaltStack running on the remote server is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the instance of SaltStack hosted on the remote server is affected by
multiple vulnerabilities:
- The Salt-API���s SSH client is vulnerable to a shell injection by including ProxyCommand in an argument,
or via ssh_options provided in an API request. (CVE-2021-3197)
- The Salt-API does not have eAuth credentials for the wheel_async client. Thus, an attacker can remotely
run any wheel modules on the master. (CVE-2021-25281)
- eauth tokens can be used once after expiration. They can be used to run command against the salt master
or minions. (CVE-2021-3144)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version");
# https://saltproject.io/security_announcements/active-saltstack-cve-release-2021-feb-25/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ad6e5b97");
script_set_attribute(attribute:"solution", value:
"Upgrade to SaltStack version referenced in the vendor security advisory.");
script_set_attribute(attribute:"agent", value:"unix");
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-2020-28243");
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:"2021/02/25");
script_set_attribute(attribute:"patch_publication_date", value:"2021/02/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/25");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:saltstack:salt");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("saltstack_salt_linux_installed.nbin");
script_require_keys("installed_sw/SaltStack Salt Master");
exit(0);
}
include('vcf.inc');
app_info = vcf::get_app_info(app:'SaltStack Salt Master');
vcf::check_all_backporting(app_info:app_info);
# report paranoia for older versions.
if ((app_info['version'] =~ "201[5-9](\.[0-9]{1,2}){2}" ) && report_paranoia < 2)
audit(AUDIT_PARANOID);
constraints = [
{ 'min_version' : '3000.0', 'fixed_version' : '3000.7' , 'fixed_display' : '3000.7 / 3000.8'},
{ 'min_version' : '3001.0', 'fixed_version' : '3001.6' },
{ 'min_version' : '3002.0', 'fixed_version' : '3002.5' }
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);
The latest version of this script can be found in these locations depending on your platform:
- Linux / Unix:
/opt/nessus/lib/nessus/plugins/saltstack_3002_5_multiple_vulnerabilities.nasl
- Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\saltstack_3002_5_multiple_vulnerabilities.nasl
- Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/saltstack_3002_5_multiple_vulnerabilities.nasl
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How to Run
Here is how to run the SaltStack < 3002.5 Multiple Vulnerabilities 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 Misc. plugin family.
- On the right side table select SaltStack < 3002.5 Multiple Vulnerabilities plugin ID 148112.
- 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 saltstack_3002_5_multiple_vulnerabilities.nasl -t <IP/HOST>
Run the plugin with audit trail message on the console:
/opt/nessus/bin/nasl -a saltstack_3002_5_multiple_vulnerabilities.nasl -t <IP/HOST>
Run the plugin with trace script execution written to the console (useful for debugging):
/opt/nessus/bin/nasl -T - saltstack_3002_5_multiple_vulnerabilities.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 saltstack_3002_5_multiple_vulnerabilities.nasl -t <IP/HOST>
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References
IAVA | Information Assurance Vulnerability Alert:
- 2021-A-0112-S
- https://www.tenable.com/plugins/nessus/148112
- http://www.nessus.org/u?ad6e5b97
- https://vulners.com/nessus/SALTSTACK_3002_5_MULTIPLE_VULNERABILITIES.NASL
- 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
- 146897 - openSUSE Security Update : salt (openSUSE-2021-347)
- 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
- 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)
- 136402 - SaltStack < 2019.2.4 / 3000.x < 3000.2 Multiple Vulnerabilities
- 142489 - SaltStack < 3002 Multiple Vulnerabilities
- 154852 - SaltStack 3000.x < 3001.8 / 3002.x < 3002.7 / 3003.x < 3003.3 Privilege Escalation
- 136423 - SaltStack < 2019.2.4 / 3000.x < 3000.2 Authentication Bypass (CVE-2020-11651)
- 146489 - SaltStack Unauthenticated RCE (direct check)
Version
This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file saltstack_3002_5_multiple_vulnerabilities.nasl version 1.6. For more plugins, visit the Nessus Plugin Library.
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