CVE-2020-15656 Information

Description

JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR 78.1 Firefox 79 and Thunderbird 78.1.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html https://bugzilla.mozilla.org/show_bug.cgi?id=1647293 https://usn.ubuntu.com/4443-1/ https://www.mozilla.org/security/advisories/mfsa2020-30/ https://www.mozilla.org/security/advisories/mfsa2020-32/ https://www.mozilla.org/security/advisories/mfsa2020-33/

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