TencentOS Server 3: redis:6 (TSSA-2025:0105)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2025:0105.
##

include('compat.inc');

if (description)
{
  script_id(276381);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/04");

  script_cve_id(
    "CVE-2022-24834",
    "CVE-2022-35977",
    "CVE-2022-36021",
    "CVE-2023-22458",
    "CVE-2023-25155",
    "CVE-2023-28856",
    "CVE-2023-45145",
    "CVE-2024-31228",
    "CVE-2024-31449",
    "CVE-2024-46981"
  );

  script_name(english:"TencentOS Server 3: redis:6 (TSSA-2025:0105)");

  script_set_attribute(attribute:"synopsis", value:
"The remote TencentOS Server 3 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 3 host is prior to tested version. It is,
therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:0105 advisory.

    Package updates are available for TencentOS Server 3 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-2022-35977:
    Redis is an in-memory database that persists on disk. Authenticated users issuing specially crafted
    SETRANGE and SORT(_RO) commands can trigger an integer overflow, resulting with Redis attempting to
    allocate impossible amounts of memory and abort with an out-of-memory (OOM) panic. The problem is fixed in
    Redis versions 7.0.8, 6.2.9 and 6.0.17. Users are advised to upgrade. There are no known workarounds for
    this vulnerability.

    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-2023-22458:
    Redis is an in-memory database that persists on disk. Authenticated users can issue a HRANDFIELD or
    ZRANDMEMBER command with specially crafted arguments to trigger a denial-of-service by crashing Redis with
    an assertion failure. This problem affects Redis versions 6.2 or newer up to but not including 6.2.9 as
    well as versions 7.0 up to but not including 7.0.8. Users are advised to upgrade. There are no known
    workarounds for this vulnerability.

    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-2023-45145:
    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.

    CVE-2024-31228:
    Redis is an open source, in-memory database that persists on disk. Authenticated users can trigger a
    denial-of-service by using specially crafted, long string match patterns on supported commands such as
    KEYS, SCAN, PSUBSCRIBE, FUNCTION LIST, COMMAND LIST and ACL definitions. Matching of extremely long
    patterns may result in unbounded recursion, leading to stack overflow and process crash. This problem has
    been fixed in Redis versions 6.2.16, 7.2.6, and 7.4.1. Users are advised to upgrade. There are no known
    workarounds for this vulnerability.

    CVE-2024-31449:
    Redis is an open source, in-memory database that persists on disk. An authenticated user may use a
    specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially
    lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This
    problem has been fixed in Redis versions 6.2.16, 7.2.6, and 7.4.1. Users are advised to upgrade. There are
    no known workarounds for this vulnerability.

    CVE-2024-46981:
    Redis is an open source, in-memory database that persists on disk. An authenticated user may use a
    specially crafted Lua script to manipulate the garbage collector and potentially lead to remote code
    execution. The problem is fixed in 7.4.2, 7.2.7, and 6.2.17. An additional workaround to mitigate the
    problem without patching the redis-server executable is to prevent users from executing Lua scripts. This
    can be done using ACL to restrict EVAL and EVALSHA commands.

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-20250105.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-46981");

  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:"2023/01/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/01/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:tencent:tencentos_server:3");
  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:"^3([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'TencentOS 3.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': '3',
    'pkgs': [
      {'reference':'redis-6.2.17-1.module+el8.10.0+719+03a8ea1b', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-6.2.17-1.module+el8.10.0+719+03a8ea1b', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-debuginfo-6.2.17-1.module+el8.10.0+719+03a8ea1b', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-debuginfo-6.2.17-1.module+el8.10.0+719+03a8ea1b', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-debugsource-6.2.17-1.module+el8.10.0+719+03a8ea1b', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-debugsource-6.2.17-1.module+el8.10.0+719+03a8ea1b', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-devel-6.2.17-1.module+el8.10.0+719+03a8ea1b', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-devel-6.2.17-1.module+el8.10.0+719+03a8ea1b', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'redis-doc-6.2.17-1.module+el8.10.0+719+03a8ea1b', '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, 'redis / redis-debuginfo / redis-debugsource / etc');
}