Podman 1.8.1 < 5.8.4 / 6.0.0 Host Environment Variable Leak (GHSA-4hq8-gpf5-8p68)

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

include('compat.inc');

if (description)
{
  script_id(325892);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/10");

  script_cve_id("CVE-2026-57231");

  script_name(english:"Podman 1.8.1 < 5.8.4 / 6.0.0 Host Environment Variable Leak (GHSA-4hq8-gpf5-8p68)");

  script_set_attribute(attribute:"synopsis", value:
"A container management application installed on the remote host is affected by an information disclosure vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Podman installed on the remote host is prior to 5.8.4 / 6.0.0. It is, therefore, affected by an
information disclosure vulnerability.

  - Podman is a tool for managing OCI containers and pods. From 1.8.1 until 5.8.4, a container image that contains an
    environment variable with just a key and no value can trick podman into passing that variable from the host into the
    container. This is made worse by the fact that using an asterisk (*) will cause podman to pass all host variables
    into the container. So essentially a malicious image can exfiltrate all podman environment variables that are set in
    the session from where the container is launched. This vulnerability is fixed in 5.8.4 and 6.0.0.
    (CVE-2026-57231)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://github.com/podman-container-tools/podman/security/advisories/GHSA-4hq8-gpf5-8p68
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?782e970d");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Podman version 5.8.4 / 6.0.0 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-57231");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:podman_project:podman");
  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("podman_detect.nbin", "cncf_podman_win_installed.nbin");
  script_require_ports("installed_sw/Podman", "installed_sw/Cloud Native Computing Foundation Podman");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Podman', 'type': 'app'},
      'check_algorithm': 'default',
      'requires': [
        {'scope': 'target', 'not_match': {'os': 'windows'}}
      ],
      'constraints': [
        {'min_version': '1.8.1', 'fixed_version': '5.8.4'},
        {'min_version': '6.0.0-rc1', 'fixed_version': '6.0.0'}
      ]
    },
    {
      'product': {'name': 'Cloud Native Computing Foundation Podman', 'type': 'app'},
      'check_algorithm': 'default',
      'requires': [
        {'scope': 'target', 'match': {'os': 'windows'}}
      ],
      'constraints': [
        {'min_version': '1.8.1', 'fixed_version': '5.8.4'},
        {'min_version': '6.0.0-rc1', 'fixed_version': '6.0.0'}
      ]
    }
  ]
};

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