Description

Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1639590

https://usn.ubuntu.com/4421-1/

https://www.mozilla.org/security/advisories/mfsa2020-20/

https://www.mozilla.org/security/advisories/mfsa2020-21/

https://www.mozilla.org/security/advisories/mfsa2020-22/

Details

Risk Information

CVSS v2

CVSS v3