GStreamer < 1.28.5 Multiple Vulnerabilities

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(326246);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/10");

  script_cve_id(
    "CVE-2026-52721",
    "CVE-2026-52722"
  );
  script_xref(name:"IAVA", value:"2026-A-0673");

  script_name(english:"GStreamer < 1.28.5 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of GStreamer installed on the remote host is prior to 1.28.5. It is, therefore, affected by
multiple vulnerabilities:

  - A signed integer overflow vulnerability was found in GStreamer's VMnc decoder. A crafted VMnc stream
    with large cursor dimensions can overflow signed integer payload-size arithmetic, bypassing a length
    check and leading to out-of-bounds reads. A remote attacker could trick a user into opening a specially
    crafted VMnc file, potentially causing a crash or information disclosure. (CVE-2026-52722)

  - Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP
    records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is
    primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user
    into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.
    (CVE-2026-52721)

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://gstreamer.freedesktop.org/security/sa-2026-0045.html");
  script_set_attribute(attribute:"see_also", value:"https://gstreamer.freedesktop.org/security/sa-2026-0046.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to GStreamer version 1.28.5, or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-52722");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:gstreamer:gstreamer");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("macos_gstreamer_installed.nbin", "gstreamer_win_installed.nbin");
  script_require_ports("installed_sw/gstreamer", "installed_sw/GStreamer");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'gstreamer', 'type': 'app'},
      'requires': [ {'scope': 'target', 'match': {'os': 'macos' } } ],
      'check_algorithm': 'default',
      'constraints': [
        {
          'fixed_version': '1.28.5'
        }
      ]
    },
    {
      'product': {'name': 'GStreamer', 'type': 'app'},
      'requires': [ {'scope': 'target', 'match': {'os': 'windows' } } ],
      'check_algorithm': 'default',
      'constraints': [
        {
          'fixed_version': '1.28.5'
        }
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);