TencentOS Server 4: suricata (TSSA-2025:0285)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2025:0285.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(238763);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/04");

  script_cve_id(
    "CVE-2025-29915",
    "CVE-2025-29916",
    "CVE-2025-29917",
    "CVE-2025-29918"
  );

  script_name(english:"TencentOS Server 4: suricata (TSSA-2025:0285)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 4 host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0285 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2025-29918:
    Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security
    Monitoring engine. A PCRE rule can be written that leads to an infinite loop when negated PCRE is used.
    Packet processing thread becomes stuck in infinite loop limiting visibility and availability in inline
    mode. This vulnerability is fixed in 7.0.9.

    CVE-2025-29917:
    Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security
    Monitoring engine. The bytes setting in the decode_base64 keyword is not properly limited. Due to this,
    signatures using the keyword and setting can cause large memory allocations of up to 4 GiB per thread.
    This vulnerability is fixed in 7.0.9.

    CVE-2025-29916:
    Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security
    Monitoring engine. Datasets declared in rules have an option to specify the `hashsize` to use. This size
    setting isn't properly limited, so the hash table allocation can be large. Untrusted rules can lead to
    large memory allocations, potentially leading to denial of service due to resource starvation. This
    vulnerability is fixed in 7.0.9.

    CVE-2025-29915:
    Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security
    Monitoring engine. The AF_PACKET defrag option is enabled by default and allows AF_PACKET to re-assemble
    fragmented packets before reaching Suricata. However the default packet size in Suricata is based on the
    network interface MTU which leads to Suricata seeing truncated packets. Upgrade to Suricata 7.0.9, which
    uses better defaults and adds warnings for user configurations that may lead to issues.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://mirrors.tencent.com/tlinux/errata/tssa-20250285.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N");
  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:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-29915");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/04/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/04/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/06/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:suricata");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/etc/os-release", "Host/TencentOS/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm2.inc');

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) || 'TencentOS' >!< os_product) audit(AUDIT_OS_NOT, 'TencentOS');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'TencentOS');
if (! preg(pattern:"^4([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 4.x', 'TencentOS ' + os_version);

if (!get_kb_item('Host/TencentOS/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 && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'TencentOS', cpu);

var constraints = [
  {
    'release': '4',
    'pkgs': [
      {'reference':'suricata-7.0.10-1.oc9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'suricata-7.0.10-1.oc9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'suricata-debuginfo-7.0.10-1.oc9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'suricata-debuginfo-7.0.10-1.oc9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'suricata-debugsource-7.0.10-1.oc9', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'suricata-debugsource-7.0.10-1.oc9', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

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, 'suricata / suricata-debuginfo / suricata-debugsource');
}