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Mozilla Thunderbird < 128.11

medium Nessus Plugin ID 237387

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Synopsis

A mail client installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.

Description

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 128.11. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-46 advisory.

 - Memory safety bug present in Firefox ESR 128.10, and Thunderbird 128.10. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. (CVE-2025-5269)

 - 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-2025-5262)

 - 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.

Solution

Upgrade to Mozilla Thunderbird version 128.11 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2025-46/

Plugin Details

Severity: Medium

ID: 237387

File Name: macos_thunderbird_128_11.nasl

Version: 1.2

Type: local

Agent: macosx

Published: 5/27/2025

Updated: 5/30/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2025-5269

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:thunderbird

Required KB Items: MacOSX/Thunderbird/Installed

Exploit Ease: No known exploits are available

Patch Publication Date: 5/27/2025

Vulnerability Publication Date: 5/27/2025

Reference Information

CVE: CVE-2025-5262, CVE-2025-5263, CVE-2025-5264, CVE-2025-5265, CVE-2025-5266, CVE-2025-5267, CVE-2025-5268, CVE-2025-5269

IAVA: 2025-A-0382