Linux Distros Unpatched Vulnerability : CVE-2026-102621

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

include('compat.inc');

if (description)
{
  script_id(351292);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/30");

  script_cve_id("CVE-2026-102621");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-102621");

  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 vulnerability was identified in Freedesktop Poppler up to 26.08.0. Affected is the function
    SplashClip::clipToPath of the file splash/SplashClip.cc. Such manipulation leads to integer overflow. The
    attack can only be performed from a local environment. The exploit is publicly available and might be
    used. Upgrading to version 26.09.0 is able to address this issue. The name of the patch is
    323c91036d99926a8b90dc14329f7b40aece22f8. It is recommended to upgrade the affected component.
    (CVE-2026-102621)

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-2026-102621");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-102621");
  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:L/AC:L/Au:S/C:N/I:N/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:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
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  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-102621");

  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:"2026/09/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/30");

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  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:7");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:poppler-cpp");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:poppler-demos");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:poppler-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:poppler-glib");
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  script_category(ACT_GATHER_INFO);
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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-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "gir1.2-poppler-0.18"},
          {"reference": "libpoppler-cpp-dev"},
          {"reference": "libpoppler-cpp0v5"},
          {"reference": "libpoppler-dev"},
          {"reference": "libpoppler-glib-dev"},
          {"reference": "libpoppler-glib-doc"},
          {"reference": "libpoppler-glib8"},
          {"reference": "libpoppler-private-dev"},
          {"reference": "libpoppler-qt5-1"},
          {"reference": "libpoppler-qt5-dev"},
          {"reference": "libpoppler-qt6-3"},
          {"reference": "libpoppler-qt6-dev"},
          {"reference": "libpoppler126"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "gir1.2-poppler-0.18"},
          {"reference": "libpoppler-cpp-dev"},
          {"reference": "libpoppler-cpp3"},
          {"reference": "libpoppler-dev"},
          {"reference": "libpoppler-glib-dev"},
          {"reference": "libpoppler-glib-doc"},
          {"reference": "libpoppler-glib8t64"},
          {"reference": "libpoppler-private-dev"},
          {"reference": "libpoppler-qt5-1t64"},
          {"reference": "libpoppler-qt5-dev"},
          {"reference": "libpoppler-qt6-3t64"},
          {"reference": "libpoppler-qt6-dev"},
          {"reference": "libpoppler162"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "gir1.2-poppler-0.18"},
          {"reference": "libpoppler-cpp-dev"},
          {"reference": "libpoppler-cpp2"},
          {"reference": "libpoppler-dev"},
          {"reference": "libpoppler-glib-dev"},
          {"reference": "libpoppler-glib-doc"},
          {"reference": "libpoppler-glib8t64"},
          {"reference": "libpoppler-private-dev"},
          {"reference": "libpoppler-qt5-1t64"},
          {"reference": "libpoppler-qt5-dev"},
          {"reference": "libpoppler-qt6-3t64"},
          {"reference": "libpoppler-qt6-dev"},
          {"reference": "libpoppler147"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "poppler"},
          {"reference": "poppler-cpp"},
          {"reference": "poppler-cpp-devel"},
          {"reference": "poppler-devel"},
          {"reference": "poppler-glib"},
          {"reference": "poppler-glib-devel"},
          {"reference": "poppler-glib-doc"},
          {"reference": "poppler-qt6"},
          {"reference": "poppler-qt6-devel"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "compat-poppler022"},
          {"reference": "compat-poppler022-cpp"},
          {"reference": "compat-poppler022-glib"},
          {"reference": "compat-poppler022-qt"},
          {"reference": "poppler"},
          {"reference": "poppler-cpp"},
          {"reference": "poppler-cpp-devel"},
          {"reference": "poppler-demos"},
          {"reference": "poppler-devel"},
          {"reference": "poppler-glib"},
          {"reference": "poppler-glib-devel"},
          {"reference": "poppler-qt"},
          {"reference": "poppler-qt-devel"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "compat-poppler022"},
          {"reference": "compat-poppler022-cpp"},
          {"reference": "compat-poppler022-glib"},
          {"reference": "compat-poppler022-qt"},
          {"reference": "poppler"},
          {"reference": "poppler-cpp"},
          {"reference": "poppler-cpp-devel"},
          {"reference": "poppler-demos"},
          {"reference": "poppler-devel"},
          {"reference": "poppler-glib"},
          {"reference": "poppler-glib-devel"},
          {"reference": "poppler-qt"},
          {"reference": "poppler-qt-devel"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "poppler"},
          {"reference": "poppler-cpp"},
          {"reference": "poppler-cpp-devel"},
          {"reference": "poppler-devel"},
          {"reference": "poppler-glib"},
          {"reference": "poppler-glib-devel"},
          {"reference": "poppler-glib-doc"},
          {"reference": "poppler-qt5"},
          {"reference": "poppler-qt5-devel"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "poppler"},
          {"reference": "poppler-cpp"},
          {"reference": "poppler-cpp-devel"},
          {"reference": "poppler-devel"},
          {"reference": "poppler-glib"},
          {"reference": "poppler-glib-devel"},
          {"reference": "poppler-glib-doc"},
          {"reference": "poppler-qt5"},
          {"reference": "poppler-qt5-devel"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "poppler"},
          {"reference": "poppler-cpp"},
          {"reference": "poppler-cpp-devel"},
          {"reference": "poppler-devel"},
          {"reference": "poppler-glib"},
          {"reference": "poppler-glib-devel"},
          {"reference": "poppler-glib-doc"},
          {"reference": "poppler-qt5"},
          {"reference": "poppler-qt5-devel"},
          {"reference": "poppler-utils"}
        ]
      }
    ]
  }
};

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_NOTE,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}