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Vulnerability Details :

CVE-2025-1942

Summary
Assigner-mozilla
Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At-04 Mar, 2025 | 13:31
Updated At-25 Mar, 2025 | 14:10
Rejected At-
Credits

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mozilla
Assigner Org ID:f16b083a-5664-49f3-a51e-8d479e5ed7fe
Published At:04 Mar, 2025 | 13:31
Updated At:25 Mar, 2025 | 14:10
Rejected At:
▼CVE Numbering Authority (CNA)

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.

Affected Products
Vendor
Mozilla CorporationMozilla
Product
Firefox
Versions
Affected
  • From unspecified before 136 (custom)
Vendor
Mozilla CorporationMozilla
Product
Thunderbird
Versions
Affected
  • From unspecified before 136 (custom)
Problem Types
TypeCWE IDDescription
textN/ADisclosure of uninitialized memory when .toUpperCase() causes string to get longer
Type: text
CWE ID: N/A
Description: Disclosure of uninitialized memory when .toUpperCase() causes string to get longer
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
anbu
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://bugzilla.mozilla.org/show_bug.cgi?id=1947139
N/A
https://www.mozilla.org/security/advisories/mfsa2025-14/
N/A
https://www.mozilla.org/security/advisories/mfsa2025-17/
N/A
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1947139
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-14/
Resource: N/A
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-17/
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-908CWE-908 Use of Uninitialized Resource
Type: CWE
CWE ID: CWE-908
Description: CWE-908 Use of Uninitialized Resource
Metrics
VersionBase scoreBase severityVector
3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@mozilla.org
Published At:04 Mar, 2025 | 14:15
Updated At:28 Mar, 2025 | 20:10

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CPE Matches
Mozilla Corporation
mozilla
>>firefox>>Versions before 136.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Mozilla Corporation
mozilla
>>thunderbird>>Versions before 136.0(exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-908Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-908
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://bugzilla.mozilla.org/show_bug.cgi?id=1947139security@mozilla.org
Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2025-14/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-17/security@mozilla.org
Vendor Advisory
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1947139
Source: security@mozilla.org
Resource:
Issue Tracking
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-14/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-17/
Source: security@mozilla.org
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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