GitLab < 18.1.5 / 18.2 < 18.2.5 / 18.3 < 18.3.1 (CVE-2025-5101)

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

include('compat.inc');

if (description)
{
  script_id(258043);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/21");

  script_cve_id("CVE-2025-5101");
  script_xref(name:"IAVA", value:"2025-A-0636-S");

  script_name(english:"GitLab < 18.1.5 / 18.2 < 18.2.5 / 18.3 < 18.3.1 (CVE-2025-5101)");

  script_set_attribute(attribute:"synopsis", value:
"The version of GitLab installed on the remote host is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of GitLab installed on the remote host is affected by a vulnerability, as follows:

  - An issue has been discovered in GitLab CE/EE affecting all versions before 18.1.5, 18.2 before 18.2.5, and
    18.3 before 18.3.1 that under certain conditions could have allowed an authenticated attacker to
    distribute malicious code that appears harmless in the web interface by taking advantage of ambiguity
    between branches and tags during repository imports. (CVE-2025-5101)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://gitlab.com/gitlab-org/cves/-/blob/master/2025/CVE-2025-5101.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c487817e");
  script_set_attribute(attribute:"see_also", value:"https://gitlab.com/gitlab-org/gitlab/-/issues/545165");
  script_set_attribute(attribute:"see_also", value:"https://hackerone.com/reports/3124199");
  script_set_attribute(attribute:"solution", value:
"Upgrade to GitLab version 18.1.5, 18.2.5, 18.3.1 or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:M/C:N/I:C/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:N/I:H/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-2025-5101");

  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:"2025/08/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/08/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/08/27");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:gitlab:gitlab");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("gitlab_webui_detect.nbin", "gitlab_nix_installed.nbin");
  script_require_keys("installed_sw/GitLab");

  exit(0);
}

include('vcf.inc');

var app = 'GitLab';
var app_info = vcf::combined_get_app_info(app:app);

if (report_paranoia < 2 && max_index(app_info.parsed_version[0]) < 3 && app_info.version =~ "^18\.(1|2|3)$")
  if (!empty_or_null(app_info.port))
    audit(AUDIT_POTENTIAL_VULN, app, app_info.version, app_info.port);
  else
    audit(AUDIT_POTENTIAL_VULN, app, app_info.version);

var constraints = [
  { 'fixed_version' : '18.1.5' },
  { 'min_version' : '18.2', 'fixed_version' : '18.2.5' },
  { 'min_version' : '18.3', 'fixed_version' : '18.3.1' }
];

vcf::check_version_and_report(
    app_info:app_info,
    constraints:constraints,
    severity:SECURITY_NOTE
);