NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
| Link | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2020-20/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2020-21/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2020-22/ | vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1631576 | vendor advisory issue tracking permissions required |
| https://www.debian.org/security/2020/dsa-4726 | third party advisory vendor advisory |
| https://usn.ubuntu.com/4421-1/ | third party advisory vendor advisory |
| https://security.gentoo.org/glsa/202007-49 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html | third party advisory mailing list |