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.
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:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-12399
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-12399
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
1.2
|
LOW | AV:L/AC:H/Au:N/C:P/I:N/A:N |
1.9
|
2.9
|
NIST | |
|
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
|
NIST |
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: nvd@nist.gov (Primary)
References for CVE-2020-12399
-
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
[SECURITY] [DLA 2388-1] nss security updateMailing List;Third Party Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1631576
Access DeniedIssue Tracking;Permissions Required;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-22/
Security Vulnerabilities fixed in Thunderbird 68.9.0 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-20/
Security Vulnerabilities fixed in Firefox 77 — MozillaVendor Advisory
-
https://usn.ubuntu.com/4421-1/
USN-4421-1: Thunderbird vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://www.debian.org/security/2020/dsa-4726
Debian -- Security Information -- DSA-4726-1 nssThird Party Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-21/
Security Vulnerabilities fixed in Firefox ESR 68.9 — MozillaVendor Advisory
-
https://security.gentoo.org/glsa/202007-49
Mozilla Network Security Service (NSS): Information disclosure (GLSA 202007-49) — Gentoo securityThird Party Advisory
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