When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.
History

Fri, 28 Mar 2025 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla
Mozilla firefox
Mozilla thunderbird

Tue, 25 Mar 2025 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-908
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 12 Mar 2025 17:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-908
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L'}


Wed, 05 Mar 2025 03:00:00 +0000

Type Values Removed Values Added
Title firefox: Disclosure of uninitialized memory when .toUpperCase() causes string to get longer
Weaknesses CWE-824
References
Metrics threat_severity

None

threat_severity

Moderate


Wed, 05 Mar 2025 00:00:00 +0000

Type Values Removed Values Added
Description When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136. When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.
References

Tue, 04 Mar 2025 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-908
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 04 Mar 2025 13:45:00 +0000

Type Values Removed Values Added
Description When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2025-03-04T13:31:25.504Z

Updated: 2025-03-25T14:10:00.285Z

Reserved: 2025-03-04T12:29:51.191Z

Link: CVE-2025-1942

cve-icon Vulnrichment

Updated: 2025-03-04T15:45:14.531Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-04T14:15:39.167

Modified: 2025-03-28T20:10:49.257

Link: CVE-2025-1942

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-03-04T13:31:25Z

Links: CVE-2025-1942 - Bugzilla