TencentOS Server 4: redis (TSSA-2024:0037)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2024:0037.
##

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

if (description)
{
  script_id(239773);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/20");

  script_cve_id(
    "CVE-2022-24834",
    "CVE-2022-36021",
    "CVE-2022-3647",
    "CVE-2023-25155",
    "CVE-2023-28856",
    "CVE-2023-36824",
    "CVE-2023-41053",
    "CVE-2023-45145"
  );

  script_name(english:"TencentOS Server 4: redis (TSSA-2024:0037)");

  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-2024:0037 advisory.

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

    CVE-2022-24834:
    Redis is an in-memory database that persists on disk. A specially crafted Lua script executing in Redis
    can trigger a heap overflow in the cjson library, and result with heap corruption and potentially remote
    code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6,
    and affects only authenticated and authorized users. The problem is fixed in versions 7.0.12, 6.2.13, and
    6.0.20.

    CVE-2022-36021:
    Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands
    (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis,
    causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11,
    7.0.9.

    CVE-2022-3647:
    ** DISPUTED ** A vulnerability, which was classified as problematic, was found in Redis. Affected is the
    function sigsegvHandler of the file debug.c of the component Crash Report. The manipulation leads to
    denial of service. The real existence of this vulnerability is still doubted at the moment. The name of
    the patch is 0bf90d944313919eb8e63d3588bf63a367f020a3. It is recommended to apply a patch to fix this
    issue. VDB-211962 is the identifier assigned to this vulnerability. NOTE: The vendor claims that this is
    not a DoS because it applies to the crash logging mechanism which is triggered after a crash has occurred.

    CVE-2023-25155:
    Redis is an in-memory database that persists on disk. Authenticated users issuing specially crafted
    `SRANDMEMBER`, `ZRANDMEMBER`, and `HRANDFIELD` commands can trigger an integer overflow, resulting in a
    runtime assertion and termination of the Redis server process. This problem affects all Redis versions.
    Patches were released in Redis version(s) 6.0.18, 6.2.11 and 7.0.9.

    CVE-2023-28856:
    Redis is an open source, in-memory database that persists on disk. Authenticated users can use the
    `HINCRBYFLOAT` command to create an invalid hash field that will crash Redis on access in affected
    versions. This issue has been addressed in in versions 7.0.11, 6.2.12, and 6.0.19. Users are advised to
    upgrade. There are no known workarounds for this issue.

    CVE-2023-36824:
    Redis is an in-memory database that persists on disk. In Redit 7.0 prior to 7.0.12, extracting key names
    from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading
    random heap memory, heap corruption and potentially remote code execution. Several scenarios that may lead
    to authenticated users executing a specially crafted `COMMAND GETKEYS` or `COMMAND GETKEYSANDFLAGS`and
    authenticated users who were set with ACL rules that match key names, executing a specially crafted
    command that refers to a variadic list of key names. The vulnerability is patched in Redis 7.0.12.



    CVE-2023-41053:
    Redis is an in-memory database that persists on disk. Redis does not correctly identify keys accessed by
    `SORT_RO` and as a result may grant users executing this command access to keys that are not explicitly
    authorized by the ACL configuration. The problem exists in Redis 7.0 or newer and has been fixed in Redis
    7.0.13 and 7.2.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

    CVE-2023-45145:
    Redis is an in-memory database that persists on disk. On startup, Redis begins listening on a Unix socket
    before adjusting its permissions to the user-provided configuration. If a permissive umask(2) is used,
    this creates a race condition that enables, during a short period of time, another process to establish an
    otherwise unauthorized connection. This problem has existed since Redis 2.6.0-RC1. This issue has been
    addressed in Redis versions 7.2.2, 7.0.14 and 6.2.14. Users are advised to upgrade. For users unable to
    upgrade, it is possible to work around the problem by disabling Unix sockets, starting Redis with a
    restrictive umask, or storing the Unix socket file in a protected directory.

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-20240037.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:H/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-3647");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-36824");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/02/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/02/07");
  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:redis");
  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':'redis-7.0.14-1.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-7.0.14-1.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-debuginfo-7.0.14-1.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-debuginfo-7.0.14-1.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-debugsource-7.0.14-1.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-debugsource-7.0.14-1.tl4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-devel-7.0.14-1.tl4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-devel-7.0.14-1.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_NOTE,
      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, 'redis / redis-debuginfo / redis-debugsource / etc');
}