TencentOS Server 3: curl (TSSA-2022:0142)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2022:0142.
##

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

if (description)
{
  script_id(239946);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/22");

  script_cve_id(
    "CVE-2022-22576",
    "CVE-2022-27774",
    "CVE-2022-27776",
    "CVE-2022-27782"
  );
  script_xref(name:"CEA-ID", value:"CEA-2022-0026");

  script_name(english:"TencentOS Server 3: curl (TSSA-2022:0142)");

  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-2022:0142 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2022-22576:
    An improper authentication vulnerability exists in curl 7.33.0 to and including 7.82.0 which might allow
    reuse OAUTH2-authenticated connections without properly making sure that the connection was authenticated
    with the same credentials as set for this transfer. This issue leads to an authentication bypass, either
    by mistake or by a malicious actor.

    CVE-2022-27774:
    An insufficiently protected credentials vulnerability exists in curl 4.9 to and include curl 7.82.0 are
    affected that could allow leaking credentials to other servers when it follows redirects from auth-
    protected HTTP(S) URLs to other protocols and port numbers.

    CVE-2022-27776:
    A insufficiently protected credentials vulnerability in fixed in curl 7.83.0 might leak authentication or
    cookie header data on HTTP redirects to the same host but another port number. Sending the same set of
    headers to a server on a different port number is a problem for applications that pass on custom
    Authorization: or Cookie:headers. Those headers often contain privacy-sensitive information or data.

    CVE-2022-27782:
    A vulnerability was found in curl. This issue occurs because curl can reuse a previously created
    connection even when a TLS or SSH-related option is changed that should have prohibited reuse. This flaw
    leads to an authentication bypass, either by mistake or by a malicious actor.

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-20220142.xml");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N");
  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:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-22576");

  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:"2022/07/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/07/23");
  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:3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:tencent:tencentos_server:curl");
  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':'curl-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-debuginfo-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-debuginfo-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-debugsource-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-debugsource-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-minimal-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-minimal-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-minimal-debuginfo-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'curl-minimal-debuginfo-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-debuginfo-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-debuginfo-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-devel-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-devel-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-minimal-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-minimal-7.61.1-22.tl3.4', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-minimal-debuginfo-7.61.1-22.tl3.4', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libcurl-minimal-debuginfo-7.61.1-22.tl3.4', '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, 'curl / curl-debuginfo / curl-debugsource / etc');
}