VulnerabilityModified
CVE-2020-6829
When performing EC scalar point multiplication, the wNAF point multiplication algorithm was used; which leaked partial information about the nonce used during signature generation.
MEDIUM 5.3EPSS 1.47%
Does this matter?
Lower severity and a low EPSS score (1.47%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 1.47% probability · 72th percentile
- CISA KEV
- Not listed
- Affected
- mozilla/firefox · mozilla/firefox mobile
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631583Permissions Required
- https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html
- https://www.mozilla.org/security/advisories/mfsa2020-36/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-39/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631583Permissions Required
- https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html
- https://www.mozilla.org/security/advisories/mfsa2020-36/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-39/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.