Docker Engine < 29.5.1 Arbitrary Code Execution

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

include('compat.inc');

if (description)
{
  script_id(324948);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/03");

  script_cve_id("CVE-2026-41567");
  script_xref(name:"IAVA", value:"2026-A-0631");

  script_name(english:"Docker Engine < 29.5.1 Arbitrary Code Execution");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has an application installed that is affected by an arbitrary code execution vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of the Docker Engine (Moby) installed on the remote host is prior to 29.5.1. It is, therefore, affected
by an arbitrary code execution vulnerability:

  - When a compressed archive is uploaded to a container via PUT /containers/{id}/archive or piped through docker
    cp -, the daemon resolves decompression binaries (such as xz or unpigz) from the container's filesystem rather
    than the host's due to incorrect ordering of operations. A malicious container image containing a trojanized
    decompression binary can achieve arbitrary code execution with full daemon privileges, including host root UID
    and unrestricted capabilities, when a user uploads a compressed (xz or gzip) archive into that container.
    (CVE-2026-41567)

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/moby/moby/security/advisories/GHSA-x86f-5xw2-fm2r");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Docker Engine version 29.5.1 or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-41567");
  script_set_attribute(attribute:"stig_severity", value:"I");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/05/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:docker:docker");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("docker_for_linux_installed.nbin");
  script_require_keys("installed_sw/Docker");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Docker', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '29.5.1'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:result);