Linux Distros Unpatched Vulnerability : CVE-2024-2698

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

include('compat.inc');

if (description)
{
  script_id(227907);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/22");

  script_cve_id("CVE-2024-2698");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2024-2698");

  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 found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was
    missing a condition for granting the forwardable flag on S4U2Self tickets. Fixing this mistake required
    adding a special case for the check_allowed_to_delegate() function: If the target service argument is
    NULL, then it means the KDC is probing for general constrained delegation rules and not checking a
    specific S4U2Proxy request. In FreeIPA 4.11.0, the behavior of ipadb_match_acl() was modified to match the
    changes from upstream MIT Kerberos 1.20. However, a mistake resulting in this mechanism applies in cases
    where the target service argument is set AND where it is unset. This results in S4U2Proxy requests being
    accepted regardless of whether or not there is a matching service delegation rule. (CVE-2024-2698)

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-2024-2698");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-2698");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2024-2698");
  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:N/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/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:"cvss_score_source", value:"CVE-2024-2698");

  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:"2024/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/05");

  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:centos:centos:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:freeipa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-admintools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-client-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-python-compat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-server-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-server-dns");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:ipa-server-trust-ad");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:python2-ipaclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:python2-ipalib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:python2-ipaserver");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:freeipa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-admintools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-client-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-python-compat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-server-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-server-dns");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ipa-server-trust-ad");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python2-ipaclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python2-ipalib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python2-ipaserver");
  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/CentOS Linux-7", "Host/OS/Debian Linux-12", "Host/OS/Red Hat Enterprise Linux-7", "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/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": "freeipa-client"},
          {"reference": "freeipa-client-epn"},
          {"reference": "freeipa-client-samba"},
          {"reference": "freeipa-common"},
          {"reference": "python3-ipaclient"},
          {"reference": "python3-ipalib"}
        ]
      }
    ]
  },
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "freeipa"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "freeipa"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "freeipa"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "freeipa"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "freeipa"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "freeipa"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.04",
        "pkgs": [
          {"reference": "freeipa"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "freeipa"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "ipa"},
          {"reference": "ipa-admintools"},
          {"reference": "ipa-client"},
          {"reference": "ipa-client-common"},
          {"reference": "ipa-common"},
          {"reference": "ipa-python"},
          {"reference": "ipa-python-compat"},
          {"reference": "ipa-server"},
          {"reference": "ipa-server-common"},
          {"reference": "ipa-server-dns"},
          {"reference": "ipa-server-trust-ad"},
          {"reference": "python2-ipaclient"},
          {"reference": "python2-ipalib"},
          {"reference": "python2-ipaserver"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "ipa"},
          {"reference": "ipa-admintools"},
          {"reference": "ipa-client"},
          {"reference": "ipa-client-common"},
          {"reference": "ipa-common"},
          {"reference": "ipa-python"},
          {"reference": "ipa-python-compat"},
          {"reference": "ipa-server"},
          {"reference": "ipa-server-common"},
          {"reference": "ipa-server-dns"},
          {"reference": "ipa-server-trust-ad"},
          {"reference": "python2-ipaclient"},
          {"reference": "python2-ipalib"},
          {"reference": "python2-ipaserver"}
        ]
      }
    ]
  }
};

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