GitLab 0.0 < 15.5.9 / 15.6 < 15.6.6 / 15.7 < 15.7.5 (CVE-2022-23521)

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

include('compat.inc');

if (description)
{
  script_id(187504);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/03");

  script_cve_id("CVE-2022-23521");

  script_name(english:"GitLab 0.0 < 15.5.9 / 15.6 < 15.6.6 / 15.7 < 15.7.5 (CVE-2022-23521)");

  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:

  - Git is distributed revision control system. gitattributes are a mechanism to allow defining attributes for
    paths. These attributes can be defined by adding a `.gitattributes` file to the repository, which contains
    a set of file patterns and the attributes that should be set for paths matching this pattern. When parsing
    gitattributes, multiple integer overflows can occur when there is a huge number of path patterns, a huge
    number of attributes for a single pattern, or when the declared attribute names are huge. These overflows
    can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently
    splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the
    index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index
    or both. This integer overflow can result in arbitrary heap reads and writes, which may result in remote
    code execution. The problem has been patched in the versions published on 2023-01-17, going back to
    v2.30.7. Users are advised to upgrade. There are no known workarounds for this issue. (CVE-2022-23521)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://about.gitlab.com/releases/2023/01/17/critical-security-release-gitlab-15-7-5-released/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5c35b5da");
  script_set_attribute(attribute:"solution", value:
"Upgrade to GitLab version 15.5.9, 15.6.6, 15.7.5 or later.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-23521");

  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:"2023/01/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/01/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/03");

  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:"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) 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 =~ "^15\.(5|6|7)$")
  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' : '0.0', 'fixed_version' : '15.5.9' },
  { 'min_version' : '15.6', 'fixed_version' : '15.6.6' },
  { 'min_version' : '15.7', 'fixed_version' : '15.7.5' }
];

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