Ubuntu 22.04 LTS : Go Networking vulnerabilities (USN-8900-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8900-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(364279);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/08");

  script_cve_id(
    "CVE-2022-27664",
    "CVE-2022-41723",
    "CVE-2023-3978",
    "CVE-2024-45338",
    "CVE-2025-22872",
    "CVE-2025-47911",
    "CVE-2025-58190",
    "CVE-2026-39821"
  );
  script_xref(name:"USN", value:"8900-1");

  script_name(english:"Ubuntu 22.04 LTS : Go Networking vulnerabilities (USN-8900-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in
the USN-8900-1 advisory.

    It was discovered that Go Networking did not properly handle server errors after sending a GOAWAY frame
    during HTTP/2 connection shutdown, which could cause the connection to hang. A remote attacker could
    possibly use this issue to cause a denial of service. (CVE-2022-27664)

    It was discovered that Go Networking had quadratic complexity when decoding HPACK headers in HTTP/2
    streams. A remote attacker could possibly use this issue to cause Go Networking to use excessive
    resources, leading to a denial of service. (CVE-2022-41723)

    It was discovered that Go Networking incorrectly rendered text nodes outside of the HTML namespace
    literally, causing text that should be escaped to not be escaped. A remote attacker could possibly use
    this issue to perform cross-site scripting attacks. (CVE-2023-3978)

    Guido Vranken discovered that Go Networking processed certain inputs to the HTML parsing functions non-
    linearly with respect to their length. A remote attacker could possibly use this issue to cause Go
    Networking to use excessive resources, leading to a denial of service. (CVE-2024-45338)

    Sean Ng discovered that Go Networking incorrectly interpreted tags in foreign content with unquoted
    attribute values ending with a solidus character as self-closing, which could result in content being
    placed in the wrong scope during DOM construction. A remote attacker could possibly use this issue to
    perform cross-site scripting attacks. (CVE-2025-22872)

    It was discovered that Go Networking had quadratic parsing complexity when processing certain HTML inputs.
    A remote attacker could possibly use this issue to cause Go Networking to use excessive resources, leading
    to a denial of service. (CVE-2025-47911)

    It was discovered that Go Networking could enter an infinite loop when parsing certain HTML inputs. A
    remote attacker could possibly use this issue to cause Go Networking to use excessive resources, leading
    to a denial of service. (CVE-2025-58190)

    It was discovered that Go Networking incorrectly accepted Punycode-encoded labels that decoded to ASCII-
    only labels when processing internationalized domain names. A remote attacker could possibly use this
    issue to bypass access control restrictions and escalate privileges. (CVE-2026-39821)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-8900-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected golang-golang-x-net-dev package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-3978");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2024-45338");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/09/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:golang-golang-x-net-dev");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '22.04', 'pkgname': 'golang-golang-x-net-dev', 'pkgver': '1:0.0+git20211209.491a49a+dfsg-1ubuntu0.1'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'golang-golang-x-net-dev');
}