Linux Distros Unpatched Vulnerability : CVE-2023-26048

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

include('compat.inc');

if (description)
{
  script_id(226951);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/09/29");

  script_cve_id("CVE-2023-26048");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2023-26048");

  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.

  - Jetty is a java based web server and servlet engine. In affected versions servlets with multipart support
    (e.g. annotated with `@MultipartConfig`) that call `HttpServletRequest.getParameter()` or
    `HttpServletRequest.getParts()` may cause `OutOfMemoryError` when the client sends a multipart request
    with a part that has a name but no filename and very large content. This happens even with the default
    settings of `fileSizeThreshold=0` which should stream the whole part content to disk. An attacker client
    may send a large multipart request and cause the server to throw `OutOfMemoryError`. However, the server
    may be able to recover after the `OutOfMemoryError` and continue its service -- although it may take some
    time. This issue has been patched in versions 9.4.51, 10.0.14, and 11.0.14. Users are advised to upgrade.
    Users unable to upgrade may set the multipart parameter `maxRequestSize` which must be set to a non-
    negative value, so the whole multipart content is limited (although still read into memory).
    (CVE-2023-26048)

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-2023-26048");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2023-26048");
  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:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-26048");

  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:"2023/04/18");
  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:centos:centos:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:jetty");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j-jcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:log4j-web");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:log4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:log4j-jcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:log4j-slf4j");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:log4j-web");
  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 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-8", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9", "Host/OS/Ubuntu Linux-14.04", "Host/OS/Ubuntu Linux-16.04");

  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/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 = {
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "jetty"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "jetty"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-slf4j"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-slf4j"},
          {"reference": "log4j-web"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "log4j"},
          {"reference": "log4j-jcl"},
          {"reference": "log4j-slf4j"},
          {"reference": "log4j-web"}
        ]
      }
    ]
  }
};

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');
}