Vulnerability Details : CVE-2020-12399
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.
Exploit prediction scoring system (EPSS) score for CVE-2020-12399
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 26 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-12399
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
1.2
|
LOW | AV:L/AC:H/Au:N/C:P/I:N/A:N |
1.9
|
2.9
|
[email protected] |
|
4.4
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N |
0.8
|
3.6
|
[email protected] |
CWE ids for CVE-2020-12399
-
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.Assigned by: [email protected] (Primary)
References for CVE-2020-12399
-
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
Mailing List;Third Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1631576
Issue Tracking;Permissions Required;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-22/
Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-20/
Vendor Advisory
-
https://usn.ubuntu.com/4421-1/
Third Party Advisory
-
https://www.debian.org/security/2020/dsa-4726
Third Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-21/
Vendor Advisory
-
https://security.gentoo.org/glsa/202007-49
Third Party Advisory
Products affected by CVE-2020-12399
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*