Debian dla-4465 : clamav - 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-4465. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(297645);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/03");

  script_name(english:"Debian dla-4465 : clamav - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4465
advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4465-1                [email protected]
    https://www.debian.org/lts/security/               Emilio Pozuelo Monfort
    February 03, 2026                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : clamav
    Version        : 1.4.3+dfsg-1~deb11u1

    The 1.0 version of ClamAV, an anti-virus utility for Unix, had recently
    been discontinued upstream, and was set to no longer accept signature
    updates on November 28, 2026. This update brings ClamAV 1.4 to bullseye,
    extending the upstream support.

    This update also includes a new version of libclamunrar for compatibility
    with rar files, and rebuilds of c-icap-modules, havp, cyrus-imapd and
    pg-snakeoil for the new libclamav12 library.

    For Debian 11 bullseye, this problem has been fixed in version
    1.4.3+dfsg-1~deb11u1.

    We recommend that you upgrade your clamav packages.

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

    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 this issue 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/clamav");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/clamav");
  script_set_attribute(attribute:"solution", value:
"Upgrade the clamav packages.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  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:"2026/02/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav-freshclam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav-milter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamav-testfiles");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:clamdscan");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libclamav-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libclamav11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libclamav12");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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': 'clamav', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'clamav-base', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'clamav-daemon', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'clamav-doc', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'clamav-docs', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'clamav-freshclam', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'clamav-milter', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'clamav-testfiles', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'clamdscan', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libclamav-dev', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libclamav11', 'reference': '1.4.3+dfsg-1~deb11u1'},
    {'release': '11.0', 'prefix': 'libclamav12', 'reference': '1.4.3+dfsg-1~deb11u1'}
];

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, 'clamav / clamav-base / clamav-daemon / clamav-doc / clamav-docs / etc');
}