Linux Distros Unpatched Vulnerability : CVE-2026-93962

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

include('compat.inc');

if (description)
{
  script_id(348345);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/22");

  script_cve_id("CVE-2026-93962");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-93962");

  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 weakness has been identified in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1. The impacted element is the
    function shm_malloc of the file src/modules/cdp/receiver.c of the component CDP Diameter Receiver.
    Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack
    remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to
    version 6.0.8 is sufficient to resolve this issue. This patch is called 38711a3e788de0130d48cb485578c482b5
    7d9351/4f62235b6f477b649c5cc18b0c81b4e26c949b98/4f62235b6f477b649c5cc18b0c81b4e26c949b98. You should
    upgrade the affected component. (CVE-2026-93962)

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-2026-93962");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-93962");
  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:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-93962");

  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:"2026/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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:26.04:-:lts");
  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:"p-cpe:/a:canonical:ubuntu_linux:kamailio");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:kamailio");
  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) 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/Debian Linux-12", "Host/OS/Debian Linux-13", "Host/OS/Debian Linux-14", "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-26.04");

  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-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "kamailio"},
          {"reference": "kamailio-autheph-modules"},
          {"reference": "kamailio-berkeley-bin"},
          {"reference": "kamailio-berkeley-modules"},
          {"reference": "kamailio-cnxcc-modules"},
          {"reference": "kamailio-cpl-modules"},
          {"reference": "kamailio-erlang-modules"},
          {"reference": "kamailio-geoip-modules"},
          {"reference": "kamailio-geoip2-modules"},
          {"reference": "kamailio-ims-modules"},
          {"reference": "kamailio-json-modules"},
          {"reference": "kamailio-kazoo-modules"},
          {"reference": "kamailio-ldap-modules"},
          {"reference": "kamailio-lua-modules"},
          {"reference": "kamailio-memcached-modules"},
          {"reference": "kamailio-mongodb-modules"},
          {"reference": "kamailio-mono-modules"},
          {"reference": "kamailio-mqtt-modules"},
          {"reference": "kamailio-mysql-modules"},
          {"reference": "kamailio-outbound-modules"},
          {"reference": "kamailio-perl-modules"},
          {"reference": "kamailio-phonenum-modules"},
          {"reference": "kamailio-postgres-modules"},
          {"reference": "kamailio-presence-modules"},
          {"reference": "kamailio-python3-modules"},
          {"reference": "kamailio-rabbitmq-modules"},
          {"reference": "kamailio-radius-modules"},
          {"reference": "kamailio-redis-modules"},
          {"reference": "kamailio-ruby-modules"},
          {"reference": "kamailio-sctp-modules"},
          {"reference": "kamailio-secsipid-modules"},
          {"reference": "kamailio-snmpstats-modules"},
          {"reference": "kamailio-sqlite-modules"},
          {"reference": "kamailio-systemd-modules"},
          {"reference": "kamailio-tls-modules"},
          {"reference": "kamailio-unixodbc-modules"},
          {"reference": "kamailio-utils-modules"},
          {"reference": "kamailio-websocket-modules"},
          {"reference": "kamailio-xml-modules"},
          {"reference": "kamailio-xmpp-modules"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "kamailio"},
          {"reference": "kamailio-autheph-modules"},
          {"reference": "kamailio-cnxcc-modules"},
          {"reference": "kamailio-cpl-modules"},
          {"reference": "kamailio-erlang-modules"},
          {"reference": "kamailio-geoip2-modules"},
          {"reference": "kamailio-ims-modules"},
          {"reference": "kamailio-json-modules"},
          {"reference": "kamailio-kafka-modules"},
          {"reference": "kamailio-kazoo-modules"},
          {"reference": "kamailio-ldap-modules"},
          {"reference": "kamailio-lua-modules"},
          {"reference": "kamailio-lwsc-modules"},
          {"reference": "kamailio-memcached-modules"},
          {"reference": "kamailio-microhttpd-modules"},
          {"reference": "kamailio-mongodb-modules"},
          {"reference": "kamailio-mqtt-modules"},
          {"reference": "kamailio-mysql-modules"},
          {"reference": "kamailio-nats-modules"},
          {"reference": "kamailio-outbound-modules"},
          {"reference": "kamailio-perl-modules"},
          {"reference": "kamailio-phonenum-modules"},
          {"reference": "kamailio-postgres-modules"},
          {"reference": "kamailio-presence-modules"},
          {"reference": "kamailio-python3-modules"},
          {"reference": "kamailio-rabbitmq-modules"},
          {"reference": "kamailio-radius-modules"},
          {"reference": "kamailio-redis-modules"},
          {"reference": "kamailio-ruby-modules"},
          {"reference": "kamailio-sctp-modules"},
          {"reference": "kamailio-secsipid-modules"},
          {"reference": "kamailio-snmpstats-modules"},
          {"reference": "kamailio-sqlite-modules"},
          {"reference": "kamailio-systemd-modules"},
          {"reference": "kamailio-tls-modules"},
          {"reference": "kamailio-unixodbc-modules"},
          {"reference": "kamailio-utils-modules"},
          {"reference": "kamailio-websocket-modules"},
          {"reference": "kamailio-xml-modules"},
          {"reference": "kamailio-xmpp-modules"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "kamailio"},
          {"reference": "kamailio-autheph-modules"},
          {"reference": "kamailio-berkeley-bin"},
          {"reference": "kamailio-berkeley-modules"},
          {"reference": "kamailio-cnxcc-modules"},
          {"reference": "kamailio-cpl-modules"},
          {"reference": "kamailio-erlang-modules"},
          {"reference": "kamailio-geoip2-modules"},
          {"reference": "kamailio-ims-modules"},
          {"reference": "kamailio-json-modules"},
          {"reference": "kamailio-kazoo-modules"},
          {"reference": "kamailio-ldap-modules"},
          {"reference": "kamailio-lua-modules"},
          {"reference": "kamailio-lwsc-modules"},
          {"reference": "kamailio-memcached-modules"},
          {"reference": "kamailio-mongodb-modules"},
          {"reference": "kamailio-mqtt-modules"},
          {"reference": "kamailio-mysql-modules"},
          {"reference": "kamailio-outbound-modules"},
          {"reference": "kamailio-perl-modules"},
          {"reference": "kamailio-phonenum-modules"},
          {"reference": "kamailio-postgres-modules"},
          {"reference": "kamailio-presence-modules"},
          {"reference": "kamailio-python3-modules"},
          {"reference": "kamailio-rabbitmq-modules"},
          {"reference": "kamailio-radius-modules"},
          {"reference": "kamailio-redis-modules"},
          {"reference": "kamailio-ruby-modules"},
          {"reference": "kamailio-sctp-modules"},
          {"reference": "kamailio-secsipid-modules"},
          {"reference": "kamailio-snmpstats-modules"},
          {"reference": "kamailio-sqlite-modules"},
          {"reference": "kamailio-systemd-modules"},
          {"reference": "kamailio-tls-modules"},
          {"reference": "kamailio-tls-wolfssl-modules"},
          {"reference": "kamailio-unixodbc-modules"},
          {"reference": "kamailio-utils-modules"},
          {"reference": "kamailio-websocket-modules"},
          {"reference": "kamailio-xml-modules"},
          {"reference": "kamailio-xmpp-modules"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "kamailio"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "kamailio"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "kamailio"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "kamailio"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "kamailio"}
        ]
      }
    ]
  },
  "Ubuntu Linux-26.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "26.04",
        "pkgs": [
          {"reference": "kamailio"}
        ]
      }
    ]
  }
};

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