Vulnerability in Mozilla Firefox
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. 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.015 (72.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox For Android — versions unspecified
- Mozilla Firefox Mobile
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2020-39/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-36/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required)
- lists.debian.org/debian-lts-announce/2023/02/msg00021.html (mailing-list)
Frequently asked questions
- What is CVE-2020-6829?
- CVE-2020-6829 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 5.3/10. Published 2020-10-28.
- How severe is CVE-2020-6829?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2020-6829 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.