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Mozilla Firefox ESR < 115.24

🗓️ 27 May 2025 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 9 Views

Mozilla Firefox ESR versions prior to 115.24 are vulnerable to several security issues.

Related
Refs
Code
#%NASL_MIN_LEVEL 80900
## 
# (C) Tenable, Inc.
#                                  
# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2025-43.
# The text itself is copyright (C) Mozilla Foundation.
##

include('compat.inc');

if (description)
{
  script_id(237301);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/18");

  script_cve_id(
    "CVE-2025-5263",
    "CVE-2025-5264",
    "CVE-2025-5265",
    "CVE-2025-5283"
  );
  script_xref(name:"IAVA", value:"2025-A-0386-S");

  script_name(english:"Mozilla Firefox ESR < 115.24");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.24. It is, therefore, affected
by multiple vulnerabilities as referenced in the mfsa2025-43 advisory.

  - A double-free could have occurred in `vpxcodecencinitmulti` after a failed allocation when initializing
    the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash.
    (CVE-2025-5283)

  - Error handling for script execution was incorrectly isolated from web content, which could have allowed
    cross-origin leak attacks. (CVE-2025-5263)

  - Due to insufficient escaping of the newline character in the Copy as cURL feature, an attacker could
    trick a user into using this command, potentially leading to local code execution on the user's system.
    (CVE-2025-5264)

  - Due to insufficient escaping of the ampersand character in the Copy as cURL feature, an attacker
    could trick a user into using this command, potentially leading to local code execution on the user's
    system. This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.
    (CVE-2025-5265)

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://www.mozilla.org/en-US/security/advisories/mfsa2025-43/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox ESR version 115.24 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N");
  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:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-5283");

  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:"2025/05/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/05/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/05/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox_esr");
  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:"MacOS X Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("macosx_firefox_installed.nasl");
  script_require_keys("installed_sw/Mozilla Firefox ESR");

  exit(0);
}

include('vdf.inc');

# @tvdl-content-verify-only
var vuln_data = {
  "metadata": {
    "spec_version": "1.0"
  },
  "requires": [
    {
      "scope": "target",
      "match": {
        "os": "macos"
      }
    }
  ],
  "checks": [
    {
      "product": {
        "name": "Mozilla Firefox ESR",
        "type": "app"
      },
      "check_algorithm": "default",
      "constraints": [
        {
          "min_version": "115.0.0",
          "fixed_version": "115.24"
        }
      ]
    }
  ]
};

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

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18 Nov 2025 00:00Current
7.1High risk
Vulners AI Score7.1
CVSS 3.15.4
EPSS0.00273
SSVC
9