CVE-2020-12401 Information

Description

During ECDSA signature generation padding applied in the nonce designed to ensure constant-time scalar multiplication was removed resulting in variable-time execution dependent on secret data. This vulnerability affects Firefox 80 and Firefox for Android 80.

CVSS Vector

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

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1631573 https://www.mozilla.org/security/advisories/mfsa2020-36/ https://www.mozilla.org/security/advisories/mfsa2020-39/

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

4.7