GitLab 8.4 < 14.4.5 / 14.5 < 14.5.3 / 14.6 < 14.6.2 (CVE-2021-39927)

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

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

if (description)
{
  script_id(159959);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/17");

  script_cve_id("CVE-2021-39927");
  script_xref(name:"IAVA", value:"2022-A-0021-S");

  script_name(english:"GitLab 8.4 < 14.4.5 / 14.5 < 14.5.3 / 14.6 < 14.6.2 (CVE-2021-39927)");

  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:

  - Server side request forgery protections in GitLab CE/EE versions between 8.4 and 14.4.4, between 14.5.0
    and 14.5.2, and between 14.6.0 and 14.6.1 would fail to protect against attacks sending requests to
    localhost on port 80 or 443 if GitLab was configured to run on a port other than 80 or 443
    (CVE-2021-39927)

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-2021-39927.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f5fb509c");
  script_set_attribute(attribute:"see_also", value:"https://gitlab.com/gitlab-org/gitlab/-/issues/340476");
  script_set_attribute(attribute:"solution", value:
"Upgrade to GitLab version 14.4.5, 14.5.3, 14.6.2 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:L/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-2021-39927");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/01/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/01/18");
  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) 2021-2024 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\.(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' : '8.4', 'fixed_version' : '14.4.5' },
  { 'min_version' : '14.5', 'fixed_version' : '14.5.3' },
  { 'min_version' : '14.6', 'fixed_version' : '14.6.2' }
];

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