TencentOS Server 4: bind (TSSA-2024:0612)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2024:0612.
##

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

if (description)
{
  script_id(239987);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/20");

  script_cve_id(
    "CVE-2022-1183",
    "CVE-2022-2795",
    "CVE-2022-2881",
    "CVE-2022-2906",
    "CVE-2022-3080",
    "CVE-2022-3094",
    "CVE-2022-3736",
    "CVE-2022-38178",
    "CVE-2022-3924",
    "CVE-2023-2828",
    "CVE-2023-3341",
    "CVE-2023-4236"
  );

  script_name(english:"TencentOS Server 4: bind (TSSA-2024:0612)");

  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-2024:0612 advisory.

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

    CVE-2023-3341:
    The code that processes control channel messages sent to `named` calls certain functions recursively
    during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on
    the environment, this may cause the packet-parsing code to run out of available stack memory, causing
    `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its
    contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key;
    only network access to the control channel's configured TCP port is necessary.
    This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16,
    9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.

    CVE-2023-4236:
    A flaw in the networking code handling DNS-over-TLS queries may cause `named` to terminate unexpectedly
    due to an assertion failure. This happens when internal data structures are incorrectly reused under
    significant DNS-over-TLS query load.
    This issue affects BIND 9 versions 9.18.0 through 9.18.18 and 9.18.11-S1 through 9.18.18-S1.

    CVE-2022-38178:
    By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can
    trigger a small memory leak. It is possible to gradually erode available memory to the point where named
    crashes for lack of resources.

    CVE-2023-2828:
    Every `named` instance configured to run as a recursive resolver maintains a cache database holding the
    responses to the queries it has recently sent to authoritative servers. The size limit for that cache
    database can be configured using the `max-cache-size` statement in the configuration file; it defaults to
    90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the
    configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets
    from the cache, to keep memory use below the configured limit.

    It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be
    severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing
    the configured `max-cache-size` limit to be significantly exceeded.
    This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13,
    9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.

    CVE-2022-3736:
    BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-
    timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9
    versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through
    9.16.36-S1.

    CVE-2022-3924:
    This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option
    `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many
    queries that require recursion, there will be a corresponding increase in the number of clients that are
    waiting for recursion to complete. If there are sufficient clients already waiting when a new client query
    is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-
    clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer
    to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This
    issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and
    9.16.12-S1 through 9.16.36-S1.

    CVE-2022-2795:
    By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the
    resolver/'s performance, effectively denying legitimate clients access to the DNS resolution service.

    CVE-2022-2881:
    The underlying bug might cause read past end of the buffer and either read memory it should not read, or
    crash the process.

    CVE-2022-2906:
    An attacker can leverage this flaw to gradually erode available memory to the point where named crashes
    for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the
    potential to deny service.

    CVE-2022-3080:
    By sending specific queries to the resolver, an attacker can cause named to crash.

    CVE-2022-3094:
    Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in
    turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has
    been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained
    during the processing of a dynamic update from a client whose access credentials are accepted. Memory
    allocated to clients that are not permitted to send updates is released immediately upon rejection. The
    scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone
    changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only
    likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates
    comparable in magnitude to a query flood intended to achieve the same detrimental outcome. BIND 9.11 and
    earlier branches are also affected, but through exhaustion of internal resources rather than memory
    constraints. This may reduce performance but should not be a significant problem for most servers.
    Therefore we don/'t intend to address this for BIND versions prior to BIND 9.16. This issue affects BIND 9
    versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through
    9.16.36-S1.

    CVE-2022-1183:
    On vulnerable configurations, the named daemon may, in some circumstances, terminate with an assertion
    failure. Vulnerable configurations are those that include a reference to http within the listen-on
    statements in their named.conf. TLS is used by both DNS over TLS (DoT) and DNS over HTTPS (DoH), but
    configurations using DoT alone are unaffected. Affects BIND 9.18.0 -> 9.18.2 and version 9.19.0 of the
    BIND 9.19 development branch.

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-20240612.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-1183");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2022-2881");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2022-2795");

  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:"2024/10/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/10/24");
  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:bind");
  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':'bind-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-debuginfo-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-debuginfo-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-debugsource-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-debugsource-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-devel-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-devel-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-filesystem-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-filesystem-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-filesystem-debuginfo-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-filesystem-debuginfo-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-ldap-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-ldap-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-ldap-debuginfo-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-ldap-debuginfo-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-mysql-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-mysql-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-mysql-debuginfo-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-mysql-debuginfo-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-sqlite3-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-sqlite3-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-sqlite3-debuginfo-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dlz-sqlite3-debuginfo-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dnssec-utils-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dnssec-utils-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dnssec-utils-debuginfo-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-dnssec-utils-debuginfo-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-libs-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-libs-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-libs-debuginfo-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-libs-debuginfo-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-utils-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-utils-9.18.18-3.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-utils-debuginfo-9.18.18-3.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'bind-utils-debuginfo-9.18.18-3.tl4', '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_WARNING,
      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, 'bind / bind-debuginfo / bind-debugsource / etc');
}