CVE-2020-6829

Publication date 5 August 2020

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
firefox	20.04 LTS focal	Fixed 80.0+build2-0ubuntu0.20.04.1
	18.04 LTS bionic	Fixed 80.0+build2-0ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 80.0+build2-0ubuntu0.16.04.1
	14.04 LTS trusty	Not in release
nss	20.04 LTS focal	Fixed 2:3.49.1-1ubuntu1.4
	18.04 LTS bionic	Fixed 2:3.35-2ubuntu2.11
	16.04 LTS xenial	Fixed 2:3.28.4-0ubuntu0.16.04.13
	14.04 LTS trusty	Fixed 2:3.28.4-0ubuntu0.14.04.5+esm7 Ubuntu Pro

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro

Notes

leosilva

same fix/patches of CVE-2020-12400

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
nss	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 · Medium
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