Linux Distros Unpatched Vulnerability : CVE-2024-38558

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

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  script_id(229027);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/22");

  script_cve_id("CVE-2024-38558");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2024-38558");

  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.

  - In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix overwriting ct
    original tuple for ICMPv6 OVS_PACKET_CMD_EXECUTE has 3 main attributes: - OVS_PACKET_ATTR_KEY - Packet
    metadata in a netlink format. - OVS_PACKET_ATTR_PACKET - Binary packet content. - OVS_PACKET_ATTR_ACTIONS
    - Actions to execute on the packet. OVS_PACKET_ATTR_KEY is parsed first to populate sw_flow_key structure
    with the metadata like conntrack state, input port, recirculation id, etc. Then the packet itself gets
    parsed to populate the rest of the keys from the packet headers. Whenever the packet parsing code starts
    parsing the ICMPv6 header, it first zeroes out fields in the key corresponding to Neighbor Discovery
    information even if it is not an ND packet. It is an 'ipv6.nd' field. However, the 'ipv6' is a union that
    shares the space between 'nd' and 'ct_orig' that holds the original tuple conntrack metadata parsed from
    the OVS_PACKET_ATTR_KEY. ND packets should not normally have conntrack state, so it's fine to share the
    space, but normal ICMPv6 Echo packets or maybe other types of ICMPv6 can have the state attached and it
    should not be overwritten. The issue results in all but the last 4 bytes of the destination address being
    wiped from the original conntrack tuple leading to incorrect packet matching and potentially executing
    wrong actions in case this packet recirculates within the datapath or goes back to userspace. ND fields
    should not be accessed in non-ND packets, so not clearing them should be fine. Executing memset() only for
    actual ND packets to avoid the issue. Initializing the whole thing before parsing is needed because ND
    packet may not contain all the options. The issue only affects the OVS_PACKET_CMD_EXECUTE path and doesn't
    affect packets entering OVS datapath from network interfaces, because in this case CT metadata is
    populated from skb after the packet is already parsed. (CVE-2024-38558)

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-2024-38558");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2024-38558");
  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:A/AC:L/Au:N/C:N/I:N/A:C");
  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:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-38558");

  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:"2024/06/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/05");

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  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");
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  exit(0);
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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")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

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    "package_manager": "dpkg-l",
    "constraints": [
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        "release": "16.04",
        "pkgs": [
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          {"reference": "kernel-rt-selftests-internal"}
        ]
      }
    ]
  }
};

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');
}