NewStart CGSL MAIN 7.02 : opensc Multiple Vulnerabilities (NS-SA-2025-0119)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2025-0119. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(242724);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/07/25");

  script_cve_id(
    "CVE-2023-2977",
    "CVE-2023-4535",
    "CVE-2023-5992",
    "CVE-2023-40660",
    "CVE-2023-40661"
  );

  script_name(english:"NewStart CGSL MAIN 7.02 : opensc Multiple Vulnerabilities (NS-SA-2025-0119)");

  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 7.02, has opensc packages installed that are affected by multiple
vulnerabilities:

  - A flaw was found in OpenSC packages that allow a potential PIN bypass. When a token/card is authenticated
    by one process, it can perform cryptographic operations in other processes when an empty zero-length pin
    is passed. This issue poses a security risk, particularly for OS logon/screen unlock and for small,
    permanently connected tokens to computers. Additionally, the token can internally track login status. This
    flaw allows an attacker to gain unauthorized access, carry out malicious actions, or compromise the system
    without the user's awareness. (CVE-2023-40660)

  - A vulnerbility was found in OpenSC. This security flaw cause a buffer overrun vulnerability in pkcs15
    cardos_have_verifyrc_package. The attacker can supply a smart card package with malformed ASN1 context.
    The cardos_have_verifyrc_package function scans the ASN1 buffer for 2 tags, where remaining length is
    wrongly caculated due to moved starting pointer. This leads to possible heap-based buffer oob read. In
    cases where ASAN is enabled while compiling this causes a crash. Further info leak or more damage is
    possible. (CVE-2023-2977)

  - Several memory vulnerabilities were identified within the OpenSC packages, particularly in the card
    enrollment process using pkcs15-init when a user or administrator enrolls cards. To take advantage of
    these flaws, an attacker must have physical access to the computer system and employ a custom-crafted USB
    device or smart card to manipulate responses to APDUs. This manipulation can potentially allow compromise
    key generation, certificate loading, and other card management operations during enrollment.
    (CVE-2023-40661)

  - An out-of-bounds read vulnerability was found in OpenSC packages within the MyEID driver when handling
    symmetric key encryption. Exploiting this flaw requires an attacker to have physical access to the
    computer and a specially crafted USB device or smart card. This flaw allows the attacker to manipulate
    APDU responses and potentially gain unauthorized access to sensitive data, compromising the system's
    security. (CVE-2023-4535)

  - A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-
    channel resistant. This issue may result in the potential leak of private data. (CVE-2023-5992)

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-2025-0119");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-2977");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-40660");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-40661");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-4535");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2023-5992");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL opensc packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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-2023-40660");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-2977");

  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:"2023/06/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/07/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:opensc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_main:7");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL 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/ZTE-CGSL/release", "Host/ZTE-CGSL/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_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\sMAIN\s7\.02")
  audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 7.02');

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 7.02': [
    'opensc-0.23.0-2.zncgsl7.6'
  ]
};
var pkg_list = pkgs[os_release];
var pkg;
foreach (pkg in pkg_list)
  if (rpm_check(reference:pkg, release:'ZTE ' + os_release, rpm_spec_vers_cmp:TRUE)) 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, 'opensc');
}