Linux Distros Unpatched Vulnerability : CVE-2026-54231

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

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  script_cve_id("CVE-2026-54231");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-54231");

  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 content injection vulnerability was found in the ABRT post-create event handler scripts in libreport.
    The event script queries the systemd journal for log entries matching the crashed process and writes the
    results to files in the dump directory without sanitizing embedded control characters. A local user can
    inject arbitrary content into the journal output by embedding newline characters in syslog messages,
    controlling the content that root writes to dump directory files. (CVE-2026-54231)

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-2026-54231");
  script_set_attribute(attribute:"solution", value:
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  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:C/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
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  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-54231");

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  script_set_attribute(attribute:"exploit_available", value:"false");
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  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/13");

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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:abrt-gui");
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  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
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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/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "abrt"},
          {"reference": "abrt-addon-ccpp"},
          {"reference": "abrt-addon-kerneloops"},
          {"reference": "abrt-addon-pstoreoops"},
          {"reference": "abrt-addon-python"},
          {"reference": "abrt-addon-upload-watch"},
          {"reference": "abrt-addon-vmcore"},
          {"reference": "abrt-addon-xorg"},
          {"reference": "abrt-cli"},
          {"reference": "abrt-console-notification"},
          {"reference": "abrt-dbus"},
          {"reference": "abrt-desktop"},
          {"reference": "abrt-devel"},
          {"reference": "abrt-gui"},
          {"reference": "abrt-gui-devel"},
          {"reference": "abrt-gui-libs"},
          {"reference": "abrt-libs"},
          {"reference": "abrt-python"},
          {"reference": "abrt-python-doc"},
          {"reference": "abrt-retrace-client"},
          {"reference": "abrt-tui"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "abrt"},
          {"reference": "abrt-addon-ccpp"},
          {"reference": "abrt-addon-kerneloops"},
          {"reference": "abrt-addon-pstoreoops"},
          {"reference": "abrt-addon-python"},
          {"reference": "abrt-addon-upload-watch"},
          {"reference": "abrt-addon-vmcore"},
          {"reference": "abrt-addon-xorg"},
          {"reference": "abrt-cli"},
          {"reference": "abrt-console-notification"},
          {"reference": "abrt-dbus"},
          {"reference": "abrt-desktop"},
          {"reference": "abrt-devel"},
          {"reference": "abrt-gui"},
          {"reference": "abrt-gui-devel"},
          {"reference": "abrt-gui-libs"},
          {"reference": "abrt-libs"},
          {"reference": "abrt-python"},
          {"reference": "abrt-python-doc"},
          {"reference": "abrt-retrace-client"},
          {"reference": "abrt-tui"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "abrt"},
          {"reference": "abrt-addon-ccpp"},
          {"reference": "abrt-addon-coredump-helper"},
          {"reference": "abrt-addon-kerneloops"},
          {"reference": "abrt-addon-pstoreoops"},
          {"reference": "abrt-addon-vmcore"},
          {"reference": "abrt-addon-xorg"},
          {"reference": "abrt-cli"},
          {"reference": "abrt-cli-ng"},
          {"reference": "abrt-console-notification"},
          {"reference": "abrt-dbus"},
          {"reference": "abrt-desktop"},
          {"reference": "abrt-gui"},
          {"reference": "abrt-gui-libs"},
          {"reference": "abrt-libs"},
          {"reference": "abrt-plugin-machine-id"},
          {"reference": "abrt-plugin-sosreport"},
          {"reference": "abrt-tui"},
          {"reference": "python3-abrt"},
          {"reference": "python3-abrt-addon"},
          {"reference": "python3-abrt-container-addon"},
          {"reference": "python3-abrt-doc"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "abrt"},
          {"reference": "abrt-addon-ccpp"},
          {"reference": "abrt-addon-coredump-helper"},
          {"reference": "abrt-addon-kerneloops"},
          {"reference": "abrt-addon-pstoreoops"},
          {"reference": "abrt-addon-vmcore"},
          {"reference": "abrt-addon-xorg"},
          {"reference": "abrt-cli"},
          {"reference": "abrt-cli-ng"},
          {"reference": "abrt-console-notification"},
          {"reference": "abrt-dbus"},
          {"reference": "abrt-desktop"},
          {"reference": "abrt-gui"},
          {"reference": "abrt-gui-libs"},
          {"reference": "abrt-libs"},
          {"reference": "abrt-plugin-machine-id"},
          {"reference": "abrt-plugin-sosreport"},
          {"reference": "abrt-tui"},
          {"reference": "python3-abrt"},
          {"reference": "python3-abrt-addon"},
          {"reference": "python3-abrt-container-addon"},
          {"reference": "python3-abrt-doc"}
        ]
      }
    ]
  }
};

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');
}