high8.8
CVE-2020-6806
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.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 74.0 |
| Mozilla | Firefox Esr | before 68.6.0 |
| Mozilla | Thunderbird | before 68.6.0 |
| Canonical | Ubuntu Linux | Versions 16.04, 18.04, 19.10 |
Weakness classification
References
- NVD record
- CVE.org record
- http://packetstormsecurity.com/files/157524/Firefox-js-ReadableStreamCloseInternal-Out-Of-Bounds-Access.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1612308
- https://usn.ubuntu.com/4328-1/
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2020-08/
- https://www.mozilla.org/security/advisories/mfsa2020-09/
- https://www.mozilla.org/security/advisories/mfsa2020-10/
- http://packetstormsecurity.com/files/157524/Firefox-js-ReadableStreamCloseInternal-Out-Of-Bounds-Access.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=1612308
- https://usn.ubuntu.com/4328-1/
- https://usn.ubuntu.com/4335-1/
- https://www.mozilla.org/security/advisories/mfsa2020-08/
- https://www.mozilla.org/security/advisories/mfsa2020-09/
- https://www.mozilla.org/security/advisories/mfsa2020-10/