CVE-2020-12399
firefox-esr - security update
4.4
MEDIUM
CVSS 3.1
EPSS 0.09%
Description
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.
How to fix CVE-2020-12399
To remediate CVE-2020-12399, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 68.9.0esr-1 or later
- —upgrade to 68.9.0esr-1~deb8u2 or later
- —upgrade to 68.9.0esr-1~deb9u1 or later
- —upgrade to 2:3.53-1 or later
- —upgrade to 2:3.26-1+debu8u11 or later
- —upgrade to 1:68.9.0-1 or later
Is CVE-2020-12399 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (6)
- from 0, < 68.9.0esr-1
- from 0, < 68.9.0esr-1~deb8u2
- from 0, < 68.9.0esr-1~deb9u1
- from 0, < 2:3.53-1
- from 0, < 2:3.26-1+debu8u11
- from 0, < 1:68.9.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.4 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N |