Linux Distros Unpatched Vulnerability : CVE-2025-66293

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

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  script_version("1.25");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/29");

  script_cve_id("CVE-2025-66293");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2025-66293");

  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.

  - LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable
    Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's
    simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid
    palette PNG images with partial transparency and gamma correction. The PNG files that trigger this
    vulnerability are valid per the PNG specification; the bug is in libpng's internal state management.
    Upgrade to libpng 1.6.52 or later. (CVE-2025-66293)

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-2025-66293");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2025-66293");
  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:N/AC:L/PR:N/UI:R/S:U/C:L/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:"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:"2025/12/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/12/04");

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}

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');

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    "constraints": [
      {
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          {"reference": "libpng-tools"},
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          {"reference": "libpng16-16t64"},
          {"reference": "thunderbird"},
          {"reference": "thunderbird-locale-af"},
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          {"reference": "thunderbird-locale-ast"},
          {"reference": "thunderbird-locale-be"},
          {"reference": "thunderbird-locale-bg"},
          {"reference": "thunderbird-locale-bn"},
          {"reference": "thunderbird-locale-bn-bd"},
          {"reference": "thunderbird-locale-br"},
          {"reference": "thunderbird-locale-ca"},
          {"reference": "thunderbird-locale-cak"},
          {"reference": "thunderbird-locale-cs"},
          {"reference": "thunderbird-locale-cy"},
          {"reference": "thunderbird-locale-da"},
          {"reference": "thunderbird-locale-de"},
          {"reference": "thunderbird-locale-dsb"},
          {"reference": "thunderbird-locale-el"},
          {"reference": "thunderbird-locale-en"},
          {"reference": "thunderbird-locale-en-gb"},
          {"reference": "thunderbird-locale-en-us"},
          {"reference": "thunderbird-locale-es"},
          {"reference": "thunderbird-locale-es-ar"},
          {"reference": "thunderbird-locale-es-es"},
          {"reference": "thunderbird-locale-et"},
          {"reference": "thunderbird-locale-eu"},
          {"reference": "thunderbird-locale-fa"},
          {"reference": "thunderbird-locale-fi"},
          {"reference": "thunderbird-locale-fr"},
          {"reference": "thunderbird-locale-fy"},
          {"reference": "thunderbird-locale-fy-nl"},
          {"reference": "thunderbird-locale-ga"},
          {"reference": "thunderbird-locale-ga-ie"},
          {"reference": "thunderbird-locale-gd"},
          {"reference": "thunderbird-locale-gl"},
          {"reference": "thunderbird-locale-he"},
          {"reference": "thunderbird-locale-hr"},
          {"reference": "thunderbird-locale-hsb"},
          {"reference": "thunderbird-locale-hu"},
          {"reference": "thunderbird-locale-hy"},
          {"reference": "thunderbird-locale-id"},
          {"reference": "thunderbird-locale-is"},
          {"reference": "thunderbird-locale-it"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-6": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "6",
        "pkgs": [
          {"reference": "libpng"},
          {"reference": "libpng-devel"},
          {"reference": "libpng-static"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "java-21-openjdk"},
          {"reference": "java-21-openjdk-demo"},
          {"reference": "java-21-openjdk-demo-fastdebug"},
          {"reference": "java-21-openjdk-demo-slowdebug"},
          {"reference": "java-21-openjdk-devel"},
          {"reference": "java-21-openjdk-devel-fastdebug"},
          {"reference": "java-21-openjdk-devel-slowdebug"},
          {"reference": "java-21-openjdk-fastdebug"},
          {"reference": "java-21-openjdk-headless"},
          {"reference": "java-21-openjdk-headless-fastdebug"},
          {"reference": "java-21-openjdk-headless-slowdebug"},
          {"reference": "java-21-openjdk-javadoc"},
          {"reference": "java-21-openjdk-javadoc-zip"},
          {"reference": "java-21-openjdk-jmods"},
          {"reference": "java-21-openjdk-jmods-fastdebug"},
          {"reference": "java-21-openjdk-jmods-slowdebug"},
          {"reference": "java-21-openjdk-slowdebug"},
          {"reference": "java-21-openjdk-src"},
          {"reference": "java-21-openjdk-src-fastdebug"},
          {"reference": "java-21-openjdk-src-slowdebug"},
          {"reference": "java-21-openjdk-static-libs"},
          {"reference": "java-21-openjdk-static-libs-fastdebug"},
          {"reference": "java-21-openjdk-static-libs-slowdebug"},
          {"reference": "java-25-openjdk"},
          {"reference": "java-25-openjdk-crypto-adapter"},
          {"reference": "java-25-openjdk-crypto-adapter-fastdebug"},
          {"reference": "java-25-openjdk-crypto-adapter-slowdebug"},
          {"reference": "java-25-openjdk-demo"},
          {"reference": "java-25-openjdk-demo-fastdebug"},
          {"reference": "java-25-openjdk-demo-slowdebug"},
          {"reference": "java-25-openjdk-devel"},
          {"reference": "java-25-openjdk-devel-fastdebug"},
          {"reference": "java-25-openjdk-devel-slowdebug"},
          {"reference": "java-25-openjdk-fastdebug"},
          {"reference": "java-25-openjdk-headless"},
          {"reference": "java-25-openjdk-headless-fastdebug"},
          {"reference": "java-25-openjdk-headless-slowdebug"},
          {"reference": "java-25-openjdk-javadoc"},
          {"reference": "java-25-openjdk-javadoc-zip"},
          {"reference": "java-25-openjdk-jmods"},
          {"reference": "java-25-openjdk-jmods-fastdebug"},
          {"reference": "java-25-openjdk-jmods-slowdebug"},
          {"reference": "java-25-openjdk-slowdebug"},
          {"reference": "java-25-openjdk-src"},
          {"reference": "java-25-openjdk-src-fastdebug"},
          {"reference": "java-25-openjdk-src-slowdebug"},
          {"reference": "java-25-openjdk-static-libs"},
          {"reference": "java-25-openjdk-static-libs-fastdebug"},
          {"reference": "java-25-openjdk-static-libs-slowdebug"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "java-1.8.0-openjdk"},
          {"reference": "java-1.8.0-openjdk-accessibility"},
          {"reference": "java-1.8.0-openjdk-accessibility-fastdebug"},
          {"reference": "java-1.8.0-openjdk-accessibility-slowdebug"},
          {"reference": "java-1.8.0-openjdk-demo"},
          {"reference": "java-1.8.0-openjdk-demo-fastdebug"},
          {"reference": "java-1.8.0-openjdk-demo-slowdebug"},
          {"reference": "java-1.8.0-openjdk-devel"},
          {"reference": "java-1.8.0-openjdk-devel-fastdebug"},
          {"reference": "java-1.8.0-openjdk-devel-slowdebug"},
          {"reference": "java-1.8.0-openjdk-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless"},
          {"reference": "java-1.8.0-openjdk-headless-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless-slowdebug"},
          {"reference": "java-1.8.0-openjdk-javadoc"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip"},
          {"reference": "java-1.8.0-openjdk-slowdebug"},
          {"reference": "java-1.8.0-openjdk-src"},
          {"reference": "java-1.8.0-openjdk-src-fastdebug"},
          {"reference": "java-1.8.0-openjdk-src-slowdebug"},
          {"reference": "java-21-openjdk"},
          {"reference": "java-21-openjdk-demo"},
          {"reference": "java-21-openjdk-demo-fastdebug"},
          {"reference": "java-21-openjdk-demo-slowdebug"},
          {"reference": "java-21-openjdk-devel"},
          {"reference": "java-21-openjdk-devel-fastdebug"},
          {"reference": "java-21-openjdk-devel-slowdebug"},
          {"reference": "java-21-openjdk-fastdebug"},
          {"reference": "java-21-openjdk-headless"},
          {"reference": "java-21-openjdk-headless-fastdebug"},
          {"reference": "java-21-openjdk-headless-slowdebug"},
          {"reference": "java-21-openjdk-javadoc"},
          {"reference": "java-21-openjdk-javadoc-zip"},
          {"reference": "java-21-openjdk-jmods"},
          {"reference": "java-21-openjdk-jmods-fastdebug"},
          {"reference": "java-21-openjdk-jmods-slowdebug"},
          {"reference": "java-21-openjdk-slowdebug"},
          {"reference": "java-21-openjdk-src"},
          {"reference": "java-21-openjdk-src-fastdebug"},
          {"reference": "java-21-openjdk-src-slowdebug"},
          {"reference": "java-21-openjdk-static-libs"},
          {"reference": "java-21-openjdk-static-libs-fastdebug"},
          {"reference": "java-21-openjdk-static-libs-slowdebug"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "java-1.8.0-openjdk"},
          {"reference": "java-1.8.0-openjdk-accessibility"},
          {"reference": "java-1.8.0-openjdk-accessibility-fastdebug"},
          {"reference": "java-1.8.0-openjdk-accessibility-slowdebug"},
          {"reference": "java-1.8.0-openjdk-demo"},
          {"reference": "java-1.8.0-openjdk-demo-fastdebug"},
          {"reference": "java-1.8.0-openjdk-demo-slowdebug"},
          {"reference": "java-1.8.0-openjdk-devel"},
          {"reference": "java-1.8.0-openjdk-devel-fastdebug"},
          {"reference": "java-1.8.0-openjdk-devel-slowdebug"},
          {"reference": "java-1.8.0-openjdk-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless"},
          {"reference": "java-1.8.0-openjdk-headless-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless-slowdebug"},
          {"reference": "java-1.8.0-openjdk-javadoc"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip"},
          {"reference": "java-1.8.0-openjdk-slowdebug"},
          {"reference": "java-1.8.0-openjdk-src"},
          {"reference": "java-1.8.0-openjdk-src-fastdebug"},
          {"reference": "java-1.8.0-openjdk-src-slowdebug"},
          {"reference": "java-21-openjdk"},
          {"reference": "java-21-openjdk-demo"},
          {"reference": "java-21-openjdk-demo-fastdebug"},
          {"reference": "java-21-openjdk-demo-slowdebug"},
          {"reference": "java-21-openjdk-devel"},
          {"reference": "java-21-openjdk-devel-fastdebug"},
          {"reference": "java-21-openjdk-devel-slowdebug"},
          {"reference": "java-21-openjdk-fastdebug"},
          {"reference": "java-21-openjdk-headless"},
          {"reference": "java-21-openjdk-headless-fastdebug"},
          {"reference": "java-21-openjdk-headless-slowdebug"},
          {"reference": "java-21-openjdk-javadoc"},
          {"reference": "java-21-openjdk-javadoc-zip"},
          {"reference": "java-21-openjdk-jmods"},
          {"reference": "java-21-openjdk-jmods-fastdebug"},
          {"reference": "java-21-openjdk-jmods-slowdebug"},
          {"reference": "java-21-openjdk-slowdebug"},
          {"reference": "java-21-openjdk-src"},
          {"reference": "java-21-openjdk-src-fastdebug"},
          {"reference": "java-21-openjdk-src-slowdebug"},
          {"reference": "java-21-openjdk-static-libs"},
          {"reference": "java-21-openjdk-static-libs-fastdebug"},
          {"reference": "java-21-openjdk-static-libs-slowdebug"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "java-1.8.0-openjdk"},
          {"reference": "java-1.8.0-openjdk-demo"},
          {"reference": "java-1.8.0-openjdk-demo-fastdebug"},
          {"reference": "java-1.8.0-openjdk-demo-slowdebug"},
          {"reference": "java-1.8.0-openjdk-devel"},
          {"reference": "java-1.8.0-openjdk-devel-fastdebug"},
          {"reference": "java-1.8.0-openjdk-devel-slowdebug"},
          {"reference": "java-1.8.0-openjdk-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless"},
          {"reference": "java-1.8.0-openjdk-headless-fastdebug"},
          {"reference": "java-1.8.0-openjdk-headless-slowdebug"},
          {"reference": "java-1.8.0-openjdk-javadoc"},
          {"reference": "java-1.8.0-openjdk-javadoc-zip"},
          {"reference": "java-1.8.0-openjdk-slowdebug"},
          {"reference": "java-1.8.0-openjdk-src"},
          {"reference": "java-1.8.0-openjdk-src-fastdebug"},
          {"reference": "java-1.8.0-openjdk-src-slowdebug"},
          {"reference": "java-21-openjdk"},
          {"reference": "java-21-openjdk-demo"},
          {"reference": "java-21-openjdk-demo-fastdebug"},
          {"reference": "java-21-openjdk-demo-slowdebug"},
          {"reference": "java-21-openjdk-devel"},
          {"reference": "java-21-openjdk-devel-fastdebug"},
          {"reference": "java-21-openjdk-devel-slowdebug"},
          {"reference": "java-21-openjdk-fastdebug"},
          {"reference": "java-21-openjdk-headless"},
          {"reference": "java-21-openjdk-headless-fastdebug"},
          {"reference": "java-21-openjdk-headless-slowdebug"},
          {"reference": "java-21-openjdk-javadoc"},
          {"reference": "java-21-openjdk-javadoc-zip"},
          {"reference": "java-21-openjdk-jmods"},
          {"reference": "java-21-openjdk-jmods-fastdebug"},
          {"reference": "java-21-openjdk-jmods-slowdebug"},
          {"reference": "java-21-openjdk-slowdebug"},
          {"reference": "java-21-openjdk-src"},
          {"reference": "java-21-openjdk-src-fastdebug"},
          {"reference": "java-21-openjdk-src-slowdebug"},
          {"reference": "java-21-openjdk-static-libs"},
          {"reference": "java-21-openjdk-static-libs-fastdebug"},
          {"reference": "java-21-openjdk-static-libs-slowdebug"}
        ]
      }
    ]
  }
};

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');
}