NewStart CGSL MAIN 6.06 : curl Multiple Vulnerabilities (NS-SA-2023-0137)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2023-0137. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(185407);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/14");

  script_cve_id(
    "CVE-2022-35252",
    "CVE-2022-43552",
    "CVE-2023-23916",
    "CVE-2023-27535"
  );
  script_xref(name:"IAVA", value:"2023-A-0008-S");
  script_xref(name:"IAVA", value:"2023-A-0153-S");
  script_xref(name:"IAVA", value:"2023-A-0531");
  script_xref(name:"IAVA", value:"2022-A-0350-S");

  script_name(english:"NewStart CGSL MAIN 6.06 : curl Multiple Vulnerabilities (NS-SA-2023-0137)");

  script_set_attribute(attribute:"synopsis", value:
"The remote NewStart CGSL host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version MAIN 6.06, has curl packages installed that are affected by multiple
vulnerabilities:

  - When curl is used to retrieve and parse cookies from a HTTP(S) server, itaccepts cookies using control
    codes that when later are sent back to a HTTPserver might make the server return 400 responses.
    Effectively allowing asister site to deny service to all siblings. (CVE-2022-35252)

  - A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all
    protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations.
    When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct
    after it had been freed, in its transfer shutdown code path. (CVE-2022-43552)

  - An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the
    chained HTTP compression algorithms, meaning that a server response can be compressed multiple times and
    potentially with differentalgorithms. The number of acceptable links in this decompression chain
    wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a
    virtually unlimited number of compression steps simply byusing many headers. The use of such a
    decompression chain could result in a malloc bomb, making curl end up spending enormous amounts of
    allocated heap memory, or trying to and returning out of memory errors. (CVE-2023-23916)

  - An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that
    can result in wrong credentials being used during subsequent transfers. Previously created connections are
    kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as
    CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not
    included in the configuration match checks, causing them to match too easily. This could lead to libcurl
    using the wrong credentials when performing a transfer, potentially allowing unauthorized access to
    sensitive information. (CVE-2023-27535)

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://security.gd-linux.com/notice/NS-SA-2023-0137");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2022-35252");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2022-43552");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-23916");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-27535");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL curl packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:N/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:H/PR:N/UI:N/S:U/C:H/I:N/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-2023-27535");

  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:"2022/09/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/09");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:curl-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:curl-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:libcurl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:libcurl-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:libcurl-minimal");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_main:6");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  exit(0);
}

include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var os_release = get_kb_item('Host/ZTE-CGSL/release');
if (isnull(os_release) || os_release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, 'NewStart Carrier Grade Server Linux');

if (os_release !~ "CGSL MAIN 6.06")
  audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 6.06');

if (!get_kb_item('Host/ZTE-CGSL/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'NewStart Carrier Grade Server Linux', cpu);

var flag = 0;

var pkgs = {
  'CGSL MAIN 6.06': [
    'curl-7.61.1-30.0.2.zncgsl6.2',
    'curl-doc-7.61.1-30.0.2.zncgsl6.2',
    'curl-minimal-7.61.1-30.0.2.zncgsl6.2',
    'libcurl-7.61.1-30.0.2.zncgsl6.2',
    'libcurl-devel-7.61.1-30.0.2.zncgsl6.2',
    'libcurl-minimal-7.61.1-30.0.2.zncgsl6.2'
  ]
};
var pkg_list = pkgs[os_release];

foreach (pkg in pkg_list)
  if (rpm_check(release:'ZTE ' + os_release, reference:pkg)) 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');
}