Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : LibRaw vulnerabilities (USN-8522-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8522-1. 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(326248);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/13");

  script_cve_id(
    "CVE-2026-5342",
    "CVE-2026-20884",
    "CVE-2026-20889",
    "CVE-2026-21413",
    "CVE-2026-24450",
    "CVE-2026-24660"
  );
  script_xref(name:"IAVA", value:"2026-A-0298");
  script_xref(name:"USN", value:"8522-1");

  script_name(english:"Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : LibRaw vulnerabilities (USN-8522-1)");

  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 / 26.04 LTS host has packages installed that are affected by multiple
vulnerabilities as referenced in the USN-8522-1 advisory.

    It was discovered that LibRaw incorrectly handled certain Nikon RAW image files. An attacker could
    possibly use this issue to cause LibRaw to crash, resulting in a denial of service. (CVE-2026-5342)

    It was discovered that LibRaw had an integer overflow in its DNG image loader. An attacker could possibly
    use this issue to cause LibRaw to crash, resulting in a denial of service, or execute arbitrary code.
    (CVE-2026-20884)

    It was discovered that LibRaw incorrectly handled certain X3F thumbnail data. An attacker could possibly
    use this issue to cause LibRaw to crash, resulting in a denial of service, or execute arbitrary code.
    (CVE-2026-20889)

    It was discovered that LibRaw had a heap-based buffer overflow in its lossless JPEG image loader. An
    attacker could possibly use this issue to cause LibRaw to crash, resulting in a denial of service, or
    execute arbitrary code. (CVE-2026-21413)

    It was discovered that LibRaw had an integer overflow in its uncompressed floating-point DNG image loader.
    An attacker could possibly use this issue to cause LibRaw to crash, resulting in a denial of service, or
    execute arbitrary code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.04. (CVE-2026-24450)

    It was discovered that LibRaw had a heap-based buffer overflow in its X3F Huffman decoder. An attacker
    could possibly use this issue to cause LibRaw to crash, resulting in a denial of service, or execute
    arbitrary code. (CVE-2026-24660)

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-8522-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected 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:POC/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: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:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/U:Amber");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-24450");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-5342");

  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:"2026/04/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/10");

  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:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libraw-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libraw-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libraw20");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libraw23t64");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"II");
  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 || '26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04 / 24.04 / 26.04', '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': 'libraw-bin', 'pkgver': '0.20.2-2ubuntu2.22.04.3', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24660']},
    {'osver': '22.04', 'pkgname': 'libraw-dev', 'pkgver': '0.20.2-2ubuntu2.22.04.3', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24660']},
    {'osver': '22.04', 'pkgname': 'libraw20', 'pkgver': '0.20.2-2ubuntu2.22.04.3', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24660']},
    {'osver': '24.04', 'pkgname': 'libraw-bin', 'pkgver': '0.21.2-2.1ubuntu0.24.04.2', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24450', 'CVE-2026-24660']},
    {'osver': '24.04', 'pkgname': 'libraw-dev', 'pkgver': '0.21.2-2.1ubuntu0.24.04.2', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24450', 'CVE-2026-24660']},
    {'osver': '24.04', 'pkgname': 'libraw23t64', 'pkgver': '0.21.2-2.1ubuntu0.24.04.2', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24450', 'CVE-2026-24660']},
    {'osver': '26.04', 'pkgname': 'libraw-bin', 'pkgver': '0.21.5b-1ubuntu1.1', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24660']},
    {'osver': '26.04', 'pkgname': 'libraw-dev', 'pkgver': '0.21.5b-1ubuntu1.1', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24660']},
    {'osver': '26.04', 'pkgname': 'libraw23t64', 'pkgver': '0.21.5b-1ubuntu1.1', 'cves': ['CVE-2026-5342', 'CVE-2026-20884', 'CVE-2026-20889', 'CVE-2026-21413', 'CVE-2026-24660']}
];

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, 'libraw-bin / libraw-dev / libraw20 / libraw23t64');
}