Incomplete WebAssembly Exception Handling Leads to Use-After-Free Vulnerability in Firefox

CVE-2024-7521

8.8HIGH

Key Information

Vendor
Mozilla
Status
Firefox
Firefox Esr
Vendor
CVE Published:
6 August 2024

Summary

Incomplete WebAssembly exception handing could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.

Affected Version(s)

Firefox < 129

Firefox ESR < 115.14

Firefox ESR < 128.1

Refferences

https://bugzilla.mozilla.org/show_bug.cgi?id=1904644
https://www.mozilla.org/security/advisories/mfsa2024-33/
https://www.mozilla.org/security/advisories/mfsa2024-34/
https://www.mozilla.org/security/advisories/mfsa2024-35/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database

Credit

Nils Bars
.