GitLab 8.13 < 16.4.3 / 16.5 < 16.5.3 / 16.6 < 16.6.1 (CVE-2023-4658)

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

include('compat.inc');

if (description)
{
  script_id(182363);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/17");

  script_cve_id("CVE-2023-4658");
  script_xref(name:"IAVA", value:"2023-A-0518-S");

  script_name(english:"GitLab 8.13 < 16.4.3 / 16.5 < 16.5.3 / 16.6 < 16.6.1 (CVE-2023-4658)");

  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 EE affecting all versions starting from 8.13 before 16.4.3, all
    versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. It was possible
    for an attacker to abuse the `Allowed to merge` permission as a guest user, when granted the permission
    through a group. (CVE-2023-4658)

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/2023/CVE-2023-4658.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?42867d14");
  script_set_attribute(attribute:"see_also", value:"https://gitlab.com/gitlab-org/gitlab/-/issues/423835");
  script_set_attribute(attribute:"see_also", value:"https://hackerone.com/reports/2104540");
  script_set_attribute(attribute:"solution", value:
"Upgrade to GitLab version 16.4.3, 16.5.3, 16.6.1 or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:L/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-2023-4658");

  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:"2023/09/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/09/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/29");

  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) 2023-2024 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 =~ "^16\.(4|5|6)$")
  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' : '8.13', 'fixed_version' : '16.4.3' },
  { 'min_version' : '16.5', 'fixed_version' : '16.5.3' },
  { 'min_version' : '16.6', 'fixed_version' : '16.6.1' }
];

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