Debian dla-4629 : apache2 - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4629. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(320880);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/12");

  script_cve_id(
    "CVE-2026-29167",
    "CVE-2026-29170",
    "CVE-2026-34355",
    "CVE-2026-34356",
    "CVE-2026-42535",
    "CVE-2026-42536",
    "CVE-2026-43951",
    "CVE-2026-44119",
    "CVE-2026-44185",
    "CVE-2026-44186",
    "CVE-2026-44631",
    "CVE-2026-48913"
  );
  script_xref(name:"IAVA", value:"2026-A-0558");

  script_name(english:"Debian dla-4629 : apache2 - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4629 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4629-1                [email protected]
    https://www.debian.org/lts/security/                   Bastien Roucaris
    June 12, 2026                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : apache2
    Version        : 2.4.67-1~deb11u3
    CVE ID         : CVE-2026-29167 CVE-2026-29170 CVE-2026-34355 CVE-2026-34356
                     CVE-2026-42535 CVE-2026-42536 CVE-2026-43951 CVE-2026-44119
                     CVE-2026-44185 CVE-2026-44186 CVE-2026-44631 CVE-2026-48913
    Debian Bug     : 1139340

    Multiple vulnerabilities have been discovered in the Apache HTTP server,
    which may result in remote code execution, privilege escalation, denial
    of service or information disclosure.

    For Debian 11 bullseye, these problems have been fixed in version
    2.4.67-1~deb11u3.

    We recommend that you upgrade your apache2 packages.

    For the detailed security status of apache2 please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/apache2

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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://security-tracker.debian.org/tracker/source-package/apache2");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-29167");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-29170");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-34355");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-34356");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42535");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-42536");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-43951");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-44119");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-44185");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-44186");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-44631");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-48913");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/apache2");
  script_set_attribute(attribute:"solution", value:
"Upgrade the apache2 packages.");
  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-2026-44631");

  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:"2026/06/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2-data");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2-ssl-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2-suexec-custom");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2-suexec-pristine");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:apache2-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libapache2-mod-md");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libapache2-mod-proxy-uwsgi");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/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);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '11.0', 'prefix': 'apache2', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'apache2-bin', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'apache2-data', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'apache2-dev', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'apache2-doc', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'apache2-ssl-dev', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'apache2-suexec-custom', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'apache2-suexec-pristine', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'apache2-utils', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'libapache2-mod-md', 'reference': '2.4.67-1~deb11u3'},
    {'release': '11.0', 'prefix': 'libapache2-mod-proxy-uwsgi', 'reference': '2.4.67-1~deb11u3'}
];

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

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'apache2 / apache2-bin / apache2-data / apache2-dev / apache2-doc / etc');
}