Debian dla-4762 : libarchive-dev - 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-4762. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(341670);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/31");

  script_cve_id("CVE-2026-14164", "CVE-2026-15028", "CVE-2026-16517");

  script_name(english:"Debian dla-4762 : libarchive-dev - 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 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4762 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4762-1                [email protected]
    https://www.debian.org/lts/security/                          Abhijith PA
    August 31, 2026                               https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : libarchive
    Version        : 3.4.3-2+deb11u5 3.6.2-1+deb12u5
    CVE ID         : CVE-2026-14164 CVE-2026-15028 CVE-2026-16517

    Several vulnerabilities were discovered in libarchive, a multi-format
    archive and compression library

    CVE-2026-14164

        A double free issue has been identified in libarchive's RAR5
        reader. During parsing of a specially crafted RAR5 archive, the
        filtered_buf pointer may remain stale after being freed during
        unpacking state reinitialization. Subsequent processing of another
        archive entry can trigger a second free of the same memory region,
        resulting in a double-free condition. Successful exploitation may
        cause applications using the vulnerable libarchive API to
        terminate unexpectedly, leading to a denial of service.

    CVE-2026-15028

        A remote attacker to trigger a heap overflow by providing a
        specially crafted tar archive. The issue occurs during the parsing
        of a PAX extended header containing a malformed SUN.holesdata
        sparse-file attribute. Successful exploitation could lead to a
        denial of service, making the system unavailable, or potentially
        allow for arbitrary code execution, giving the attacker control
        over the affected system.

    CVE-2026-16517

        A signed integer overflow vulnerability was found in libarchive's
        ZIP writer. In the archive_write_zip_header function in
        archive_write_set_format_zip.c, when ZIP encryption is enabled and
        the entry file size is close to INT64_MAX, the addition of the
        encryption overhead to the entry size overflows int64_t, resulting
        in undefined behavior. This could lead to incorrect Zip64
        extension decisions or potential memory corruption.

    For Debian 11 bullseye, these problems have been fixed in version
    3.4.3-2+deb11u5.

    For Debian 12 bookworm, these problems have been fixed in version
    3.6.2-1+deb12u5.

    We recommend that you upgrade your libarchive packages.

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

    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/libarchive");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-14164");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-15028");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-16517");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/libarchive");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/libarchive");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libarchive-dev packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:P/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/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-2026-15028");

  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:"2026/06/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libarchive-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libarchive-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libarchive13");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  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]+|^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0 / 12.0', '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': 'libarchive-dev', 'reference': '3.4.3-2+deb11u5'},
    {'release': '11.0', 'prefix': 'libarchive-tools', 'reference': '3.4.3-2+deb11u5'},
    {'release': '11.0', 'prefix': 'libarchive13', 'reference': '3.4.3-2+deb11u5'},
    {'release': '12.0', 'prefix': 'libarchive-dev', 'reference': '3.6.2-1+deb12u5'},
    {'release': '12.0', 'prefix': 'libarchive-tools', 'reference': '3.6.2-1+deb12u5'},
    {'release': '12.0', 'prefix': 'libarchive13', 'reference': '3.6.2-1+deb12u5'}
];

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_NOTE,
    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, 'libarchive-dev / libarchive-tools / libarchive13');
}