CVE-2020-6806

Description

By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.

References

https://www.mozilla.org/security/advisories/mfsa2020-10/

https://www.mozilla.org/security/advisories/mfsa2020-09/

https://www.mozilla.org/security/advisories/mfsa2020-08/

https://usn.ubuntu.com/4335-1/

https://usn.ubuntu.com/4328-1/

https://bugzilla.mozilla.org/show_bug.cgi?id=1612308

http://packetstormsecurity.com/files/157524/Firefox-js-ReadableStreamCloseInternal-Out-Of-Bounds-Access.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3