NewStart CGSL MAIN 7.02 : gstreamer1 Multiple Vulnerabilities (NS-SA-2026-0093)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2026-0093. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(343589);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/08");

  script_cve_id(
    "CVE-2025-6663",
    "CVE-2026-2920",
    "CVE-2026-2921",
    "CVE-2026-2922",
    "CVE-2026-3081",
    "CVE-2026-3082",
    "CVE-2026-3083",
    "CVE-2026-3085",
    "CVE-2026-3086"
  );
  script_xref(name:"IAVA", value:"2025-A-0447-S");
  script_xref(name:"IAVA", value:"2026-A-0212");

  script_name(english:"NewStart CGSL MAIN 7.02 : gstreamer1 Multiple Vulnerabilities (NS-SA-2026-0093)");

  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 gstreamer1 packages installed that are affected by
multiple vulnerabilities:

  - GStreamer rtpqdm2depay Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability
    allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with
    this library is required to exploit this vulnerability but attack vectors may vary depending on the
    implementation. The specific flaw exists within the processing of X-QDM RTP payloads. The issue results
    from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based
    buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
    Was ZDI-CAN-28851. (CVE-2026-3085)

  - GStreamer H266 Codec Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This
    vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer.
    Interaction with this library is required to exploit this vulnerability but attack vectors may vary
    depending on the implementation. The specific flaw exists within the parsing of H266 sei messages. The
    issue results from the lack of proper validation of the length of user-supplied data prior to copying it
    to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the
    context of the current process. Was ZDI-CAN-27381. (CVE-2025-6663)

  - GStreamer ASF Demuxer Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability
    allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with
    this library is required to exploit this vulnerability but attack vectors may vary depending on the
    implementation. The specific flaw exists within the processing of stream headers within ASF files. The
    issue results from the lack of proper validation of the length of user-supplied data prior to copying it
    to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the
    context of the current process. Was ZDI-CAN-28843. (CVE-2026-2920)

  - GStreamer RIFF Palette Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows
    remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this
    library is required to exploit this vulnerability but attack vectors may vary depending on the
    implementation. The specific flaw exists within the handling of palette data in AVI files. The issue
    results from the lack of proper validation of user-supplied data, which can result in an integer overflow
    before writing to memory. An attacker can leverage this vulnerability to execute code in the context of
    the current process. Was ZDI-CAN-28854. (CVE-2026-2921)

  - GStreamer RealMedia Demuxer Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability
    allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with
    this library is required to exploit this vulnerability but attack vectors may vary depending on the
    implementation. The specific flaw exists within the processing of video packets. The issue results from
    the lack of proper validation of user-supplied data, which can result in a write past the end of an
    allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the
    current process. Was ZDI-CAN-28845. (CVE-2026-2922)

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-2026-0093");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2025-6663");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-2920");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-2921");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-2922");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-3081");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-3082");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-3083");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-3085");
  script_set_attribute(attribute:"see_also", value:"https://security.gd-linux.com/info/CVE-2026-3086");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL gstreamer1 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:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-3085");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/06/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:gstreamer1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:gstreamer1-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:gstreamer1-doc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_main:7");
  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) 2026 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': [
    'gstreamer1-1.28.1-2.zncgsl7.1',
    'gstreamer1-devel-1.28.1-2.zncgsl7.1',
    'gstreamer1-doc-1.28.1-2.zncgsl7.1'
  ]
};
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, 'gstreamer1');
}