CVE-2023-3600

During the worker lifecycle, a use-after-free condition could have occured, which could have led to a potentially exploitable crash. This vulnerability affects Firefox < 115.0.2, Firefox ESR < 115.0.2, and Thunderbird < 115.0.1.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Potential Mitigations

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1839703
• https://www.mozilla.org/security/advisories/mfsa2023-26/
• https://www.mozilla.org/security/advisories/mfsa2023-27/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1839703
• https://www.mozilla.org/security/advisories/mfsa2023-26/
• https://www.mozilla.org/security/advisories/mfsa2023-27/