CVE-2020-12401
low-risk
Published 2020-10-08
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.
Do I need to act?
-
0.19% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.7/10
Medium
LOCAL
/ HIGH complexity
Affected Vendors
References (8)
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1631573
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-36/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-39/
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1631573
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-36/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-39/
20
/ 100
low-risk
Severity
12/34 · Low
Exploitability
1/34 · Minimal
Exposure
7/34 · Low