CVE-2020-6829
Published: 5 August 2020
When performing EC scalar point multiplication, the wNAF point multiplication algorithm was used; which leaked partial information about the nonce used during signature generation. Given an electro-magnetic trace of a few signature generations, the private key could have been computed. This vulnerability affects Firefox < 80 and Firefox for Android < 80.
Notes
Author | Note |
---|---|
leosilva |
same fix/patches of CVE-2020-12400 |
Priority
Status
Package | Release | Status |
---|---|---|
firefox
Launchpad, Ubuntu, Debian |
bionic |
Released
(80.0+build2-0ubuntu0.18.04.1)
|
focal |
Released
(80.0+build2-0ubuntu0.20.04.1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(80)
|
|
xenial |
Released
(80.0+build2-0ubuntu0.16.04.1)
|
|
nss
Launchpad, Ubuntu, Debian |
bionic |
Released
(2:3.35-2ubuntu2.11)
|
focal |
Released
(2:3.49.1-1ubuntu1.4)
|
|
trusty |
Released
(2:3.28.4-0ubuntu0.14.04.5+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(2:3.55-1)
|
|
xenial |
Released
(2:3.28.4-0ubuntu0.16.04.13)
|
|
Patches:
upstream: https://hg.mozilla.org/projects/nss/rev/e55ab3145546ae3cf1333b43956a974675d2d25c upstream: https://hg.mozilla.org/projects/nss/rev/3f022d5eca5d3cd0e366a825a5681953d76299d0 |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.3 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | Low |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
References
- 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-2020-6829
- https://ubuntu.com/security/notices/USN-4474-1
- https://www.cve.org/CVERecord?id=CVE-2020-6829
- NVD
- Launchpad
- Debian