high8.8
CVE-2020-26950
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition.
Impact
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 82.0.3 |
| Mozilla | Firefox Esr | before 78.4.1 |
| Mozilla | Thunderbird | before 78.4.2 |
Weakness classification
References
- NVD record
- CVE.org record
- http://packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1675905
- https://www.mozilla.org/security/advisories/mfsa2020-49/
- http://packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1675905
- https://www.mozilla.org/security/advisories/mfsa2020-49/