TencentOS Server 3: git-lfs (TSSA-2023:0145)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Tencent Linux Security Advisory TSSA-2023:0145.
##

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

if (description)
{
  script_id(240042);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/20");

  script_cve_id(
    "CVE-2022-1705",
    "CVE-2022-27664",
    "CVE-2022-2880",
    "CVE-2022-30630",
    "CVE-2022-30632",
    "CVE-2022-30635",
    "CVE-2022-32148",
    "CVE-2022-32189",
    "CVE-2022-41715",
    "CVE-2022-41717"
  );

  script_name(english:"TencentOS Server 3: git-lfs (TSSA-2023:0145)");

  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-2023:0145 advisory.

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

      CVE-2022-2880:
      A flaw was found in the golang package, where requests forwarded by reverse proxy include the raw query
    parameters from the inbound request, including unparseable parameters rejected by net/http. This issue
    could permit query parameter smuggling when a Go proxy forwards a parameter with an unparseable value.
    After the fix, the reverse proxy sanitizes the query parameters in the forwarded query when the outbound
    request's form field is set after the reverse proxy. The director function returns, indicating that the
    proxy has parsed the query parameters. Proxies that do not parse query parameters continue to forward the
    original query parameters unchanged.

      CVE-2022-41715:
      A flaw was found in the golang package, where programs that compile regular expressions from untrusted
    sources are vulnerable to memory exhaustion or a denial of service. The parsed regexp representation is
    linear in the input size. Still, in some cases, the constant factor can be as high as 40,000, making a
    relatively small regexp consume larger amounts of memory. After the fix, each regexp being parsed is
    limited to a 256 MB memory footprint. Regular expressions whose representation would use more space than
    that are rejected. Routine use of regular expressions is unaffected.

      CVE-2022-41717:
      A flaw was found in the net/http library of the golang package. This flaw allows an attacker to cause
    excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a
    cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped,
    an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open
    connection.

      CVE-2022-1705:
      A flaw was found in golang. The HTTP/1 client accepted invalid Transfer-Encoding headers indicating
    chunked encoding. This issue could allow request smuggling, but only if combined with an intermediate
    server that also improperly accepts the header as invalid.

      CVE-2022-2880:
      A flaw was found in the golang package, where requests forwarded by reverse proxy include the raw query
    parameters from the inbound request, including unparseable parameters rejected by net/http. This issue
    could permit query parameter smuggling when a Go proxy forwards a parameter with an unparseable value.
    After the fix, the reverse proxy sanitizes the query parameters in the forwarded query when the outbound
    request's form field is set after the reverse proxy. The director function returns, indicating that the
    proxy has parsed the query parameters. Proxies that do not parse query parameters continue to forward the
    original query parameters unchanged.

      CVE-2022-27664:
      A flaw was found in the golang package. In net/http in Go, attackers can cause a denial of service
    because an HTTP/2 connection can hang during closing if a fatal error preempts the shutdown.

      CVE-2022-30630:
      A flaw was found in the golang standard library, io/fs. Calling Glob on a path that contains a large
    number of path separators can cause a panic issue due to stack exhaustion. This could allow an attacker to
    impact availability.

      CVE-2022-30632:
      A flaw was found in golang. Calling Glob on a path that contains a large number of path separators can
    cause a panic issue due to stack exhaustion. This can cause an attacker to impact availability.

      CVE-2022-30635:
      A flaw was found in golang. When calling Decoder, Decode on a message that contains deeply nested
    structures, a panic can occur due to stack exhaustion and allows an attacker to impact system
    availability.

      CVE-2022-32148:
      A flaw was found in net/http/httputil golang package. When httputil.ReverseProxy.ServeHTTP is called
    with a Request.Header map containing a nil value for the X-Forwarded-For header, ReverseProxy could set
    the client IP incorrectly. This issue may affect confidentiality.

      CVE-2022-32189:
      An uncontrolled resource consumption flaw was found in Golang math/big. A too-short encoded message can
    cause a panic in Float.GobDecode and Rat.GobDecode in math/big in Go, potentially allowing an attacker to
    create a denial of service, impacting availability.

      CVE-2022-41715:
      A flaw was found in the golang package, where programs that compile regular expressions from untrusted
    sources are vulnerable to memory exhaustion or a denial of service. The parsed regexp representation is
    linear in the input size. Still, in some cases, the constant factor can be as high as 40,000, making a
    relatively small regexp consume larger amounts of memory. After the fix, each regexp being parsed is
    limited to a 256 MB memory footprint. Regular expressions whose representation would use more space than
    that are rejected. Routine use of regular expressions is unaffected.

      CVE-2022-41717:
      A flaw was found in the net/http library of the golang package. This flaw allows an attacker to cause
    excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a
    cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped,
    an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open
    connection.

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-20230145.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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-2880");

  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:"2023/07/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/07/13");
  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:git-lfs");
  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':'git-lfs-3.2.0-2.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-lfs-3.2.0-2.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-lfs-debuginfo-3.2.0-2.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-lfs-debuginfo-3.2.0-2.tl3', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-lfs-debugsource-3.2.0-2.tl3', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'git-lfs-debugsource-3.2.0-2.tl3', '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, 'git-lfs / git-lfs-debuginfo / git-lfs-debugsource');
}