CVE-2021-23960
N/A
N/A
Summary
Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mozilla | Firefox | < 85 | affected |
| Mozilla | Thunderbird | < 78.7 | affected |
| Mozilla | Firefox ESR | < 78.7 | affected |
Weaknesses
- Use-after-poison for incorrectly redeclared JavaScript variables during GC
ADP Enrichment
CVE Program Container
Additional References
- https://www.mozilla.org/security/advisories/mfsa2021-03/
- https://www.mozilla.org/security/advisories/mfsa2021-04/
- https://www.mozilla.org/security/advisories/mfsa2021-05/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1675755
References
- https://www.mozilla.org/security/advisories/mfsa2021-03/
- https://www.mozilla.org/security/advisories/mfsa2021-04/
- https://www.mozilla.org/security/advisories/mfsa2021-05/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1675755
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