CVE-2020-12406 Information

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.

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=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/

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