Vulnerability CVE-2020-6829


Published: 2020-10-28

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.

Type:

NVD-CWE-noinfo

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Mozilla -> Firefox 

 References:
https://bugzilla.mozilla.org/show_bug.cgi?id=1631583
https://www.mozilla.org/security/advisories/mfsa2020-36/
https://www.mozilla.org/security/advisories/mfsa2020-39/

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