GitLab 11.3 < 14.2.6 / 14.3 < 14.3.4 / 14.4 < 14.4.1 (CVE-2021-39909)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(159921);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/17");

  script_cve_id("CVE-2021-39909");
  script_xref(name:"IAVA", value:"2021-A-0523-S");

  script_name(english:"GitLab 11.3 < 14.2.6 / 14.3 < 14.3.4 / 14.4 < 14.4.1 (CVE-2021-39909)");

  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:

  - Lack of email address ownership verification in the CODEOWNERS feature in all versions of GitLab EE
    starting from 11.3 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting
    from 14.4 before 14.4.1 allows an attacker to bypass CODEOWNERS Merge Request approval requirement under
    rare circumstances (CVE-2021-39909)

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/2021/CVE-2021-39909.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?43ed3a2e");
  script_set_attribute(attribute:"see_also", value:"https://gitlab.com/gitlab-org/gitlab/-/issues/335191");
  script_set_attribute(attribute:"see_also", value:"https://hackerone.com/reports/1237750");
  script_set_attribute(attribute:"solution", value:
"Upgrade to GitLab version 14.2.6, 14.3.4, 14.4.1 or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:N/I:P/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:H/PR:L/UI:N/S:U/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-2021-39909");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/04/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/04/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/04/20");

  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_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("gitlab_nix_installed.nbin", "gitlab_webui_detect.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 =~ "^14\.(2|3|4)$")
  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 = [
  { 'min_version' : '11.3', 'fixed_version' : '14.2.6' },
  { 'min_version' : '14.3', 'fixed_version' : '14.3.4' },
  { 'min_version' : '14.4', 'fixed_version' : '14.4.1' }
];

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