Linux Distros Unpatched Vulnerability : CVE-2026-101258

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

include('compat.inc');

if (description)
{
  script_id(363674);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/07");

  script_cve_id("CVE-2026-101258");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-101258");

  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 was found in Ghostscript. When Ghostscript renders a crafted PostScript or EPS document, it can
    bypass the -dSAFER sandbox and execute arbitrary shell commands in the context of the Ghostscript process.
    The issue chains memory corruption in document parsing with disabling of internal path access controls at
    runtime. An attacker can deliver the document directly or through formats that delegate rendering to
    Ghostscript (for example EPS import or print conversion workflows). Successful exploitation can compromise
    confidentiality, integrity, and availability of data accessible to the process running Ghostscript.
    (CVE-2026-101258)

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-2026-101258");
  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:L/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:N/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:"cvss_score_source", value:"CVE-2026-101258");

  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:"2026/10/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ghostscript");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ghostscript-chinese");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ghostscript-chinese-zh_TW");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ghostscript-gtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ghostscript-tools-dvipdf");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ghostscript-tools-printing");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ghostscript-x11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libgs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libgs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ghostscript");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ghostscript-chinese");
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  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-7", "Host/OS/CentOS Linux-8", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-6", "Host/OS/Red Hat Enterprise Linux-7", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9");

  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/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "ghostscript"},
          {"reference": "ghostscript-doc"},
          {"reference": "ghostscript-tools-dvipdf"},
          {"reference": "ghostscript-tools-fonts"},
          {"reference": "ghostscript-tools-printing"},
          {"reference": "libgs"},
          {"reference": "libgs-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-6": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "6",
        "pkgs": [
          {"reference": "ghostscript"},
          {"reference": "ghostscript-devel"},
          {"reference": "ghostscript-doc"},
          {"reference": "ghostscript-gtk"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "ghostscript"},
          {"reference": "ghostscript-chinese"},
          {"reference": "ghostscript-chinese-zh_CN"},
          {"reference": "ghostscript-chinese-zh_TW"},
          {"reference": "ghostscript-cups"},
          {"reference": "ghostscript-devel"},
          {"reference": "ghostscript-doc"},
          {"reference": "ghostscript-gtk"},
          {"reference": "libgs"},
          {"reference": "libgs-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "ghostscript"},
          {"reference": "ghostscript-chinese"},
          {"reference": "ghostscript-chinese-zh_CN"},
          {"reference": "ghostscript-chinese-zh_TW"},
          {"reference": "ghostscript-cups"},
          {"reference": "ghostscript-devel"},
          {"reference": "ghostscript-doc"},
          {"reference": "ghostscript-gtk"},
          {"reference": "libgs"},
          {"reference": "libgs-devel"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "ghostscript"},
          {"reference": "ghostscript-doc"},
          {"reference": "ghostscript-tools-dvipdf"},
          {"reference": "ghostscript-tools-fonts"},
          {"reference": "ghostscript-tools-printing"},
          {"reference": "ghostscript-x11"},
          {"reference": "libgs"},
          {"reference": "libgs-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "ghostscript"},
          {"reference": "ghostscript-doc"},
          {"reference": "ghostscript-tools-dvipdf"},
          {"reference": "ghostscript-tools-fonts"},
          {"reference": "ghostscript-tools-printing"},
          {"reference": "ghostscript-x11"},
          {"reference": "libgs"},
          {"reference": "libgs-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "ghostscript"},
          {"reference": "ghostscript-doc"},
          {"reference": "ghostscript-tools-dvipdf"},
          {"reference": "ghostscript-tools-fonts"},
          {"reference": "ghostscript-tools-printing"},
          {"reference": "ghostscript-x11"},
          {"reference": "libgs"},
          {"reference": "libgs-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 third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

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');
}