AlmaLinux 9.2 [TuxCare] Security Update: containernetworking-plugins Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1762538558)

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

include('compat.inc');

if (description)
{
  script_id(352966);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/30");

  script_cve_id(
    "CVE-2022-41723",
    "CVE-2022-41724",
    "CVE-2022-41725",
    "CVE-2023-24534",
    "CVE-2023-24536",
    "CVE-2023-24538",
    "CVE-2023-24539",
    "CVE-2023-29400",
    "CVE-2023-39319",
    "CVE-2023-39321",
    "CVE-2023-39322",
    "CVE-2023-45287",
    "CVE-2024-24788",
    "CVE-2024-34156"
  );
  script_xref(name:"CLSA", value:"2025:1762538558");

  script_name(english:"AlmaLinux 9.2 [TuxCare] Security Update: containernetworking-plugins Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1762538558)");

  script_set_attribute(attribute:"synopsis", value:
"The AlmaLinux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare
ALMALINUX9.2:CLSA-2025:1762538558 advisory.

  - A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient
    to cause a denial of service from a small number of small requests. (CVE-2022-41723)

  - Large handshake records may cause panics in crypto/tls. Both clients and servers may send large TLS
    handshake records which cause servers and clients, respectively, to panic when attempting to construct
    responses. This affects all TLS 1.3 clients, TLS 1.2 clients which explicitly enable session resumption
    (by setting Config.ClientSessionCache to a non-nil value), and TLS 1.3 servers which request client
    certificates (by setting Config.ClientAuth >= RequestClientCert). (CVE-2022-41724)

  - A denial of service is possible from excessive resource consumption in net/http and mime/multipart.
    Multipart form parsing with mime/multipart.Reader.ReadForm can consume largely unlimited amounts of memory
    and disk files. This also affects form parsing in the net/http package with the Request methods FormFile,
    FormValue, ParseMultipartForm, and PostFormValue. ReadForm takes a maxMemory parameter, and is documented
    as storing up to maxMemory bytes +10MB (reserved for non-file parts) in memory. File parts which cannot
    be stored in memory are stored on disk in temporary files. The unconfigurable 10MB reserved for non-file
    parts is excessively large and can potentially open a denial of service vector on its own. However,
    ReadForm did not properly account for all memory consumed by a parsed form, such as map entry overhead,
    part names, and MIME headers, permitting a maliciously crafted form to consume well over 10MB. In
    addition, ReadForm contained no limit on the number of disk files created, permitting a relatively small
    request body to create a large number of disk temporary files. With fix, ReadForm now properly accounts
    for various forms of memory overhead, and should now stay within its documented limit of 10MB + maxMemory
    bytes of memory consumption. Users should still be aware that this limit is high and may still be
    hazardous. In addition, ReadForm now creates at most one on-disk temporary file, combining multiple form
    parts into a single temporary file. The mime/multipart.File interface type's documentation states, If
    stored on disk, the File's underlying concrete type will be an *os.File.. This is no longer the case when
    a form contains more than one file part, due to this coalescing of parts into a single file. The previous
    behavior of using distinct files for each form part may be reenabled with the environment variable
    GODEBUG=multipartfiles=distinct. Users should be aware that multipart.ReadForm and the http.Request
    methods that call it do not limit the amount of disk consumed by temporary files. Callers can limit the
    size of form data with http.MaxBytesReader. (CVE-2022-41725)

  - HTTP and MIME header parsing can allocate large amounts of memory, even when parsing small inputs,
    potentially leading to a denial of service. Certain unusual patterns of input data can cause the common
    function used to parse HTTP and MIME headers to allocate substantially more memory than required to hold
    the parsed headers. An attacker can exploit this behavior to cause an HTTP server to allocate large
    amounts of memory from a small request, potentially leading to memory exhaustion and a denial of service.
    With fix, header parsing now correctly allocates only the memory required to hold parsed headers.
    (CVE-2023-24534)

  - Multipart form parsing can consume large amounts of CPU and memory when processing form inputs containing
    very large numbers of parts. This stems from several causes: 1. mime/multipart.Reader.ReadForm limits the
    total memory a parsed multipart form can consume. ReadForm can undercount the amount of memory consumed,
    leading it to accept larger inputs than intended. 2. Limiting total memory does not account for increased
    pressure on the garbage collector from large numbers of small allocations in forms with many parts. 3.
    ReadForm can allocate a large number of short-lived buffers, further increasing pressure on the garbage
    collector. The combination of these factors can permit an attacker to cause an program that parses
    multipart forms to consume large amounts of CPU and memory, potentially resulting in a denial of service.
    This affects programs that use mime/multipart.Reader.ReadForm, as well as form parsing in the net/http
    package with the Request methods FormFile, FormValue, ParseMultipartForm, and PostFormValue. With fix,
    ReadForm now does a better job of estimating the memory consumption of parsed forms, and performs many
    fewer short-lived allocations. In addition, the fixed mime/multipart.Reader imposes the following limits
    on the size of parsed forms: 1. Forms parsed with ReadForm may contain no more than 1000 parts. This limit
    may be adjusted with the environment variable GODEBUG=multipartmaxparts=. 2. Form parts parsed with
    NextPart and NextRawPart may contain no more than 10,000 header fields. In addition, forms parsed with
    ReadForm may contain no more than 10,000 header fields across all parts. This limit may be adjusted with
    the environment variable GODEBUG=multipartmaxheaders=. (CVE-2023-24536)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/advisories/2025/clsa-2025_1762538558.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2a1b0fef");
  script_set_attribute(attribute:"see_also", value:"https://cve.tuxcare.com/els/releases/CLSA-2025:1762538558");
  script_set_attribute(attribute:"solution", value:
"Update the affected containernetworking-plugins package based on the guidance in TuxCare advisory
ALMALINUX9.2:CLSA-2025:1762538558.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-24538");

  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_severity", value:"Critical");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/02/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Alma Linux Local Security Checks");

  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");
  script_require_keys("Host/OS/extended-third-party", "Host/local_checks_enabled", "Host/AlmaLinux/release", "Host/AlmaLinux/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'TuxCare') exit(0, 'TuxCare support not enabled.');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'AlmaLinux' >!< os_product) audit(AUDIT_OS_NOT, 'AlmaLinux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'AlmaLinux');
if (! preg(pattern:"^9.2([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'AlmaLinux 9.2', 'AlmaLinux ' + os_version);

if (!get_kb_item('Host/AlmaLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'AlmaLinux', cpu);


var constraints = [
  {
    'release': '9',
    'sp': '2',
    'pkgs': [
      {'reference':'containernetworking-plugins-1.2.0-1.el9.tuxcare.els2', 'sp':'2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'1'}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}


if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'containernetworking-plugins');
}