Linux Distros Unpatched Vulnerability : CVE-2026-1225

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

include('compat.inc');

if (description)
{
  script_id(295333);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/21");

  script_cve_id("CVE-2026-1225");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-1225");

  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.

  - ACE vulnerability in configuration file processing by QOS.CH logback-core up to and including version
    1.5.24 in Java applications, allows an attacker to instantiate classes already present on the class path
    by compromising an existing logback configuration file. The instantiation of a potentially malicious Java
    class requires that said class is present on the user's class-path. In addition, the attacker must have
    write access to a configuration file. However, after successful instantiation, the instance is very likely
    to be discarded with no further ado. (CVE-2026-1225)

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-2026-1225");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-1225");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-1225");
  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:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/S:N/AU:N/RE:M/U:Green");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-1225");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/22");

  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");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8");
  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:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:14.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:logback");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jcl-over-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jul-to-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j-jcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j-over-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j-web");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j-ext");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j-javadoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j-jcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j-jdk14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j-log4j12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j-manual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j-migrator");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:slf4j-sources");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:logback");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jcl-over-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jul-to-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:log4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:log4j-jcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:log4j-over-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:log4j-slf4j");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:slf4j-ext");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:slf4j-javadoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:slf4j-jcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:slf4j-jdk14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:slf4j-log4j12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:slf4j-manual");
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  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  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");
  script_require_ports("Host/OS/CentOS Linux-8", "Host/OS/Debian Linux-11", "Host/OS/Debian Linux-12", "Host/OS/Debian Linux-13", "Host/OS/Debian Linux-14", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9", "Host/OS/Ubuntu Linux-16.04", "Host/OS/Ubuntu Linux-18.04", "Host/OS/Ubuntu Linux-20.04", "Host/OS/Ubuntu Linux-22.04", "Host/OS/Ubuntu Linux-24.04", "Host/OS/Ubuntu Linux-25.10");

  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": "liblogback-java"},
          {"reference": "liblogback-java-doc"}
        ]
      }
    ]
  },
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "liblogback-java"},
          {"reference": "liblogback-java-doc"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "liblogback-java"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "liblogback-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "logback"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "logback"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "logback"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "logback"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "logback"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "logback"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "jcl-over-slf4j"},
          {"reference": "jul-to-slf4j"},
          {"reference": "log4j-over-slf4j"},
          {"reference": "slf4j"},
          {"reference": "slf4j-javadoc"},
          {"reference": "slf4j-jcl"},
          {"reference": "slf4j-jdk14"},
          {"reference": "slf4j-manual"},
          {"reference": "slf4j-migrator"},
          {"reference": "slf4j-sources"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "jcl-over-slf4j"},
          {"reference": "jul-to-slf4j"},
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-over-slf4j"},
          {"reference": "log4j-slf4j"},
          {"reference": "log4j-web"},
          {"reference": "slf4j"},
          {"reference": "slf4j-ext"},
          {"reference": "slf4j-javadoc"},
          {"reference": "slf4j-jcl"},
          {"reference": "slf4j-jdk14"},
          {"reference": "slf4j-log4j12"},
          {"reference": "slf4j-manual"},
          {"reference": "slf4j-sources"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "jcl-over-slf4j"},
          {"reference": "jul-to-slf4j"},
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-over-slf4j"},
          {"reference": "log4j-slf4j"},
          {"reference": "log4j-web"},
          {"reference": "slf4j"},
          {"reference": "slf4j-ext"},
          {"reference": "slf4j-javadoc"},
          {"reference": "slf4j-jcl"},
          {"reference": "slf4j-jdk14"},
          {"reference": "slf4j-log4j12"},
          {"reference": "slf4j-manual"},
          {"reference": "slf4j-sources"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "jcl-over-slf4j"},
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-slf4j"},
          {"reference": "slf4j"},
          {"reference": "slf4j-jdk14"}
        ]
      }
    ]
  }
};

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');
}