CVE-2020-12401CWE-203

CVE-2020-12401

Medium · published October 8, 2020

CVSS v3.1
4.7
EPSS
0%
Percentile
24.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00326 · 24.4th percentile
Weakness
CWE-203 · Observable Discrepancy
Published
2020-10-08T18:15Z
Affected products (2)
ProductVersionsFixed in
mozilla/firefox< 80.080.0
mozilla/firefox_mobile< 80.080.0
References (8)
https://bugzilla.mozilla.org/show_bug.cgi?id=1631573 · [email protected]https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html · [email protected]https://www.mozilla.org/security/advisories/mfsa2020-36/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2020-39/ · [email protected]https://bugzilla.mozilla.org/show_bug.cgi?id=1631573 · af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html · af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-36/ · af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-39/ · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 08 OCT 00:00Z
    During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar multiplication was removed, resulting in variable-time…
    cvelistv5