LiteLLM 1.74.2 < 1.83.7 Command Injection Vulnerability (GHSA-v4p8-mg3p-g94g)

#%NASL_MIN_LEVEL 80900
#
## (C) Tenable, Inc.
#

include('compat.inc');

if (description)
{
  script_id(324115);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/02");

  script_cve_id("CVE-2026-42271");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2026/06/22");

  script_name(english:"LiteLLM 1.74.2 < 1.83.7 Command Injection Vulnerability (GHSA-v4p8-mg3p-g94g)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has a compromised version of LiteLLM installed.");
  script_set_attribute(attribute:"description", value:
"The version of the LiteLLM Python package installed on the remote host is 1.74.2 before 1.83.7. It is, therefore, 
affected by a vulnerability:

  - From version 1.74.2 to before version 1.83.7, two endpoints used to preview an MCP server before saving 
    it — POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list — accepted a full server configuration
    in the request body, including the command, args, and env fields used by the stdio transport. When called 
    with a stdio configuration, the endpoints attempted to connect, which spawned the supplied command as a 
    subprocess on the proxy host with the privileges of the proxy process. The endpoints were gated only by a 
    valid proxy API key, with no role check. Any authenticated user — including holders of low-privilege 
    internal-user keys — could therefore run arbitrary commands on the host. (CVE-2026-42271)

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://github.com/advisories/GHSA-v4p8-mg3p-g94g");
  script_set_attribute(attribute:"see_also", value:"https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stable");
  script_set_attribute(attribute:"solution", value:
"Upgrade to LiteLLM version 1.83.7 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  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:L/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:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:A");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-42271");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:litellm:litellm");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Artificial Intelligence");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("python_litellm_detect.nasl");
  script_require_ports("installed_sw/LiteLLM");

  exit(0);
}

include('python.inc');

var pkg = 'LiteLLM';
var cpe = 'cpe:/a:litellm:litellm';

var libs = python::get_package_info(pkg_name:pkg, cpe:cpe);

if (empty_or_null(libs))
  audit(AUDIT_NOT_INST, pkg);

vcf::check_all_backporting(app_info:libs);

var constraints = [
  { 'min_version' : '1.74.2', 'fixed_version' : '1.83.7' }
];

vcf::check_version_and_report(app_info:libs, constraints:constraints, severity:SECURITY_HOLE);