Linux Distros Unpatched Vulnerability : CVE-2026-5342

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(304755);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/21");

  script_cve_id("CVE-2026-5342");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-5342");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - A flaw has been found in LibRaw up to 0.22.0. This affects the function
    LibRaw::nikon_load_padded_packed_raw of the file src/decoders/decoders_libraw.cpp of the component
    TIFF/NEF. Executing a manipulation of the argument load_flags/raw_width can lead to out-of-bounds read. It
    is possible to launch the attack remotely. The exploit has been published and may be used. Upgrading to
    version 0.22.1 mitigates this issue. This patch is called b8397cd45657b84e88bd1202528d1764265f185c. It is
    advisable to upgrade the affected component. (CVE-2026-5342)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2026-5342");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-5342");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-5342");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:U/RC:C");
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  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_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:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  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");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:dcraw");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:digikam");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exactimage");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:kodi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libraw");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:LibRaw-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libraw1394");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libraw1394-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libraw");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:LibRaw");
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  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
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  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Debian Linux-11": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "11",
        "pkgs": [
          {"reference": "libraw-bin"},
          {"reference": "libraw-dev"},
          {"reference": "libraw-doc"},
          {"reference": "libraw20"}
        ]
      }
    ]
  },
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "libraw-bin"},
          {"reference": "libraw-dev"},
          {"reference": "libraw-doc"},
          {"reference": "libraw20"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "libraw-bin"},
          {"reference": "libraw-dev"},
          {"reference": "libraw-doc"},
          {"reference": "libraw23t64"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "darktable"},
          {"reference": "dcraw"},
          {"reference": "digikam"},
          {"reference": "exactimage"},
          {"reference": "kodi"},
          {"reference": "rawtherapee"},
          {"reference": "ufraw"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "darktable"},
          {"reference": "dcraw"},
          {"reference": "digikam"},
          {"reference": "exactimage"},
          {"reference": "kodi"},
          {"reference": "rawtherapee"},
          {"reference": "ufraw"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "darktable"},
          {"reference": "dcraw"},
          {"reference": "digikam"},
          {"reference": "exactimage"},
          {"reference": "kodi"},
          {"reference": "rawtherapee"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "darktable"},
          {"reference": "dcraw"},
          {"reference": "digikam"},
          {"reference": "exactimage"},
          {"reference": "kodi"},
          {"reference": "libraw-bin"},
          {"reference": "libraw-dev"},
          {"reference": "libraw-doc"},
          {"reference": "libraw20"},
          {"reference": "rawtherapee"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "darktable"},
          {"reference": "dcraw"},
          {"reference": "digikam"},
          {"reference": "exactimage"},
          {"reference": "kodi"},
          {"reference": "libraw-bin"},
          {"reference": "libraw-dev"},
          {"reference": "libraw-doc"},
          {"reference": "libraw23t64"},
          {"reference": "rawtherapee"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "darktable"},
          {"reference": "dcraw"},
          {"reference": "digikam"},
          {"reference": "exactimage"},
          {"reference": "kodi"},
          {"reference": "libraw-bin"},
          {"reference": "libraw-dev"},
          {"reference": "libraw-doc"},
          {"reference": "libraw23t64"},
          {"reference": "rawtherapee"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "LibRaw"},
          {"reference": "LibRaw-devel"},
          {"reference": "LibRaw-static"},
          {"reference": "libraw1394"},
          {"reference": "libraw1394-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "LibRaw"},
          {"reference": "LibRaw-devel"},
          {"reference": "LibRaw-static"},
          {"reference": "libraw1394"},
          {"reference": "libraw1394-devel"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "LibRaw"},
          {"reference": "LibRaw-devel"},
          {"reference": "libraw1394"},
          {"reference": "libraw1394-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "LibRaw"},
          {"reference": "LibRaw-devel"},
          {"reference": "libraw1394"},
          {"reference": "libraw1394-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "LibRaw"},
          {"reference": "LibRaw-devel"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}