CVE-2020-6807 Information

Description

When a device was changed while a stream was about to be destroyed the codestream-reinit/code task may have been executed after the stream was destroyed causing a use-after-free and a potentially exploitable crash. This vulnerability affects Thunderbird 68.6 Firefox 74 Firefox ESR68.6 and Firefox ESR 68.6.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1614971 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/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8