CVE-2020-12401
Published: 5 August 2020
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.
Priority
Status
Package | Release | Status |
---|---|---|
nss Launchpad, Ubuntu, Debian |
upstream |
Released
(2:3.55-1)
|
trusty |
Released
(2:3.28.4-0ubuntu0.14.04.5+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
bionic |
Released
(2:3.35-2ubuntu2.11)
|
|
focal |
Released
(2:3.49.1-1ubuntu1.4)
|
|
xenial |
Released
(2:3.28.4-0ubuntu0.16.04.13)
|
|
Patches: upstream: https://hg.mozilla.org/projects/nss/rev/aeb2e583ee957a699d949009c7ba37af76515c20 |
||
firefox Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
bionic |
Released
(80.0+build2-0ubuntu0.18.04.1)
|
|
focal |
Released
(80.0+build2-0ubuntu0.20.04.1)
|
|
upstream |
Released
(80)
|
|
xenial |
Released
(80.0+build2-0ubuntu0.16.04.1)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 4.7 |
Attack vector | Local |
Attack complexity | High |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12401
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes
- https://ubuntu.com/security/notices/USN-4455-1
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-36/#CVE-2020-12401
- https://ubuntu.com/security/notices/USN-4474-1
- NVD
- Launchpad
- Debian