Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : Apache HTTP Server vulnerabilities (USN-7968-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7968-1. 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(294780);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/20");

  script_cve_id(
    "CVE-2025-55753",
    "CVE-2025-58098",
    "CVE-2025-65082",
    "CVE-2025-66200"
  );
  script_xref(name:"IAVA", value:"2025-A-0889");
  script_xref(name:"USN", value:"7968-1");

  script_name(english:"Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : Apache HTTP Server vulnerabilities (USN-7968-1)");

  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 / 24.04 LTS / 25.10 host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-7968-1 advisory.

    It was discovered that the Apache HTTP Server incorrectly handled failed ACME certificate renewals. This
    could result in renewal attempts to be repeated without delays, possibly leading to a denial of service.
    (CVE-2025-55753)

    Anthony Parfenov discovered that the Apache HTTP Server would pass the query string to cmd directives when
    configured with Server Side Includes (SSI) enabled and mod_cgid. An attacker could possibly use this issue
    to execute arbitrary code. (CVE-2025-58098)

    Mattias sander discovered that the Apache HTTP Server incorrectly neutralized certain environment
    variables. This could result in unexpectedly superseding variables calculated by the server for CGI
    programs. (CVE-2025-65082)

    Mattias sander discovered that the Apache HTTP Server incorrectly handled AllowOverride FileInfo
    configurations when using mod_userdir with suexec. An attacker with access to use the RequestHeader
    directive in htaccess can cause some CGI scripts to run under an unexpected userid. (CVE-2025-66200)

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-7968-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:P");
  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:H/I:H/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-58098");

  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:"2025/12/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/20");

  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:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:apache2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:apache2-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:apache2-data");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:apache2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:apache2-ssl-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:apache2-suexec-custom");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:apache2-suexec-pristine");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:apache2-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-md");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-proxy-uwsgi");
  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:"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_info.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 || '24.04' >< os_release || '25.10' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04 / 24.04 / 25.10', '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': 'apache2', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'apache2-bin', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'apache2-data', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'apache2-dev', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'apache2-ssl-dev', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'apache2-suexec-custom', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'apache2-suexec-pristine', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'apache2-utils', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'libapache2-mod-md', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '22.04', 'pkgname': 'libapache2-mod-proxy-uwsgi', 'pkgver': '2.4.52-1ubuntu4.18'},
    {'osver': '24.04', 'pkgname': 'apache2', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'apache2-bin', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'apache2-data', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'apache2-dev', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'apache2-ssl-dev', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'apache2-suexec-custom', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'apache2-suexec-pristine', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'apache2-utils', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'libapache2-mod-md', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '24.04', 'pkgname': 'libapache2-mod-proxy-uwsgi', 'pkgver': '2.4.58-1ubuntu8.10'},
    {'osver': '25.10', 'pkgname': 'apache2', 'pkgver': '2.4.64-1ubuntu3.2'},
    {'osver': '25.10', 'pkgname': 'apache2-bin', 'pkgver': '2.4.64-1ubuntu3.2'},
    {'osver': '25.10', 'pkgname': 'apache2-data', 'pkgver': '2.4.64-1ubuntu3.2'},
    {'osver': '25.10', 'pkgname': 'apache2-dev', 'pkgver': '2.4.64-1ubuntu3.2'},
    {'osver': '25.10', 'pkgname': 'apache2-ssl-dev', 'pkgver': '2.4.64-1ubuntu3.2'},
    {'osver': '25.10', 'pkgname': 'apache2-suexec-custom', 'pkgver': '2.4.64-1ubuntu3.2'},
    {'osver': '25.10', 'pkgname': 'apache2-suexec-pristine', 'pkgver': '2.4.64-1ubuntu3.2'},
    {'osver': '25.10', 'pkgname': 'apache2-utils', 'pkgver': '2.4.64-1ubuntu3.2'}
];

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_HOLE,
    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, 'apache2 / apache2-bin / apache2-data / apache2-dev / etc');
}