CVEs-PoC/2020/CVE-2020-6806.md

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.

POC

Reference

• http://packetstormsecurity.com/files/157524/Firefox-js-ReadableStreamCloseInternal-Out-Of-Bounds-Access.html
• https://usn.ubuntu.com/4328-1/

Github

• https://github.com/ARPSyndicate/cvemon