Linux Distros Unpatched Vulnerability : CVE-2025-0689

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

include('compat.inc');

if (description)
{
  script_id(232100);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/21");

  script_cve_id("CVE-2025-0689");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2025-0689");

  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.

  - When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length
    metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it
    assumes the read size from the disk is always smaller than the allocated buffer size which is not
    guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data
    to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
    (CVE-2025-0689)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-0689");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2025-0689");
  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: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-2025-0689");

  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:"2025/03/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  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:25.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:grub2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:grub2-signed");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:grub2-unsigned");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:grub2");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("set_linux_os_id.nasl", "ssh_get_info2.nasl");
  script_require_keys("Host/OS/identifier", "Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched");
  script_require_ports("Host/OS/Debian Linux-11", "Host/OS/Ubuntu Linux-14.04", "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-25.04", "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/Debian/dpkg-l"))) 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": "grub-common"},
          {"reference": "grub-coreboot"},
          {"reference": "grub-coreboot-bin"},
          {"reference": "grub-coreboot-dbg"},
          {"reference": "grub-efi"},
          {"reference": "grub-efi-amd64"},
          {"reference": "grub-efi-amd64-bin"},
          {"reference": "grub-efi-amd64-dbg"},
          {"reference": "grub-efi-amd64-signed-template"},
          {"reference": "grub-efi-arm"},
          {"reference": "grub-efi-arm-bin"},
          {"reference": "grub-efi-arm-dbg"},
          {"reference": "grub-efi-arm64"},
          {"reference": "grub-efi-arm64-bin"},
          {"reference": "grub-efi-arm64-dbg"},
          {"reference": "grub-efi-arm64-signed-template"},
          {"reference": "grub-efi-ia32"},
          {"reference": "grub-efi-ia32-bin"},
          {"reference": "grub-efi-ia32-dbg"},
          {"reference": "grub-efi-ia32-signed-template"},
          {"reference": "grub-efi-ia64"},
          {"reference": "grub-efi-ia64-bin"},
          {"reference": "grub-efi-ia64-dbg"},
          {"reference": "grub-emu"},
          {"reference": "grub-emu-dbg"},
          {"reference": "grub-firmware-qemu"},
          {"reference": "grub-ieee1275"},
          {"reference": "grub-ieee1275-bin"},
          {"reference": "grub-ieee1275-dbg"},
          {"reference": "grub-linuxbios"},
          {"reference": "grub-mount-udeb"},
          {"reference": "grub-pc"},
          {"reference": "grub-pc-bin"},
          {"reference": "grub-pc-dbg"},
          {"reference": "grub-rescue-pc"},
          {"reference": "grub-theme-starfield"},
          {"reference": "grub-uboot"},
          {"reference": "grub-uboot-bin"},
          {"reference": "grub-uboot-dbg"},
          {"reference": "grub-xen"},
          {"reference": "grub-xen-bin"},
          {"reference": "grub-xen-dbg"},
          {"reference": "grub-xen-host"},
          {"reference": "grub-yeeloong"},
          {"reference": "grub-yeeloong-bin"},
          {"reference": "grub-yeeloong-dbg"},
          {"reference": "grub2"},
          {"reference": "grub2-common"}
        ]
      }
    ]
  },
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "grub-common"},
          {"reference": "grub-coreboot"},
          {"reference": "grub-coreboot-bin"},
          {"reference": "grub-coreboot-dbg"},
          {"reference": "grub-efi"},
          {"reference": "grub-efi-amd64"},
          {"reference": "grub-efi-amd64-bin"},
          {"reference": "grub-efi-amd64-dbg"},
          {"reference": "grub-efi-amd64-signed"},
          {"reference": "grub-efi-arm"},
          {"reference": "grub-efi-arm-bin"},
          {"reference": "grub-efi-arm-dbg"},
          {"reference": "grub-efi-arm64"},
          {"reference": "grub-efi-arm64-bin"},
          {"reference": "grub-efi-arm64-dbg"},
          {"reference": "grub-efi-ia32"},
          {"reference": "grub-efi-ia32-bin"},
          {"reference": "grub-efi-ia32-dbg"},
          {"reference": "grub-efi-ia64"},
          {"reference": "grub-efi-ia64-bin"},
          {"reference": "grub-efi-ia64-dbg"},
          {"reference": "grub-emu"},
          {"reference": "grub-emu-dbg"},
          {"reference": "grub-firmware-qemu"},
          {"reference": "grub-ieee1275"},
          {"reference": "grub-ieee1275-bin"},
          {"reference": "grub-ieee1275-dbg"},
          {"reference": "grub-linuxbios"},
          {"reference": "grub-mount-udeb"},
          {"reference": "grub-pc"},
          {"reference": "grub-pc-bin"},
          {"reference": "grub-pc-dbg"},
          {"reference": "grub-rescue-pc"},
          {"reference": "grub-theme-starfield"},
          {"reference": "grub-uboot"},
          {"reference": "grub-uboot-bin"},
          {"reference": "grub-uboot-dbg"},
          {"reference": "grub-xen"},
          {"reference": "grub-xen-bin"},
          {"reference": "grub-xen-dbg"},
          {"reference": "grub-yeeloong"},
          {"reference": "grub-yeeloong-bin"},
          {"reference": "grub-yeeloong-dbg"},
          {"reference": "grub2"},
          {"reference": "grub2-common"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "grub-efi-amd64-signed"},
          {"reference": "grub-efi-arm64-signed"},
          {"reference": "grub2-unsigned"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "grub-efi-amd64-signed"},
          {"reference": "grub-efi-arm64-signed"},
          {"reference": "grub2-unsigned"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "grub-efi-amd64-signed"},
          {"reference": "grub-efi-arm64-signed"},
          {"reference": "grub2-unsigned"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "grub-efi-amd64"},
          {"reference": "grub-efi-amd64-bin"},
          {"reference": "grub-efi-amd64-dbg"},
          {"reference": "grub-efi-amd64-signed"},
          {"reference": "grub-efi-arm64"},
          {"reference": "grub-efi-arm64-bin"},
          {"reference": "grub-efi-arm64-dbg"},
          {"reference": "grub-efi-arm64-signed"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "grub-efi-amd64"},
          {"reference": "grub-efi-amd64-bin"},
          {"reference": "grub-efi-amd64-dbg"},
          {"reference": "grub-efi-amd64-signed"},
          {"reference": "grub-efi-arm64"},
          {"reference": "grub-efi-arm64-bin"},
          {"reference": "grub-efi-arm64-dbg"},
          {"reference": "grub-efi-arm64-signed"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.04",
        "pkgs": [
          {"reference": "grub-efi-amd64"},
          {"reference": "grub-efi-amd64-bin"},
          {"reference": "grub-efi-amd64-dbg"},
          {"reference": "grub-efi-amd64-signed"},
          {"reference": "grub-efi-amd64-unsigned"},
          {"reference": "grub-efi-arm64"},
          {"reference": "grub-efi-arm64-bin"},
          {"reference": "grub-efi-arm64-dbg"},
          {"reference": "grub-efi-arm64-signed"},
          {"reference": "grub-efi-arm64-unsigned"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "grub-efi-amd64"},
          {"reference": "grub-efi-amd64-bin"},
          {"reference": "grub-efi-amd64-dbg"},
          {"reference": "grub-efi-amd64-signed"},
          {"reference": "grub-efi-amd64-unsigned"},
          {"reference": "grub-efi-arm64"},
          {"reference": "grub-efi-arm64-bin"},
          {"reference": "grub-efi-arm64-dbg"},
          {"reference": "grub-efi-arm64-signed"},
          {"reference": "grub-efi-arm64-unsigned"}
        ]
      }
    ]
  }
};

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');
}