CVE-2020-12399medium
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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.
References
https://www.mozilla.org/security/advisories/mfsa2020-20/
https://www.mozilla.org/security/advisories/mfsa2020-21/
https://bugzilla.mozilla.org/show_bug.cgi?id=1631576
https://www.mozilla.org/security/advisories/mfsa2020-22/
https://www.debian.org/security/2020/dsa-4726
https://usn.ubuntu.com/4421-1/
https://security.gentoo.org/glsa/202007-49
https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html
Details
Source: MITRE
Published: 2020-07-09
Updated: 2022-01-04
Type: CWE-203
Risk Information
CVSS v2
Base Score: 1.2
Vector: AV:L/AC:H/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 1.9
Severity: LOW
CVSS v3
Base Score: 4.4
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 0.8
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Configuration 2
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 150659 | SUSE SLES11 Security Update : mozilla-nspr, mozilla-nss (SUSE-SU-2020:14418-1) | Nessus | SuSE Local Security Checks | critical |
| 147683 | EulerOS Virtualization 2.9.0 : nss (EulerOS-SA-2021-1640) | Nessus | Huawei Local Security Checks | critical |
| 147550 | EulerOS Virtualization 2.9.1 : nss (EulerOS-SA-2021-1615) | Nessus | Huawei Local Security Checks | critical |
| 147038 | EulerOS Virtualization for ARM 64 3.0.6.0 : nss-softokn (EulerOS-SA-2021-1536) | Nessus | Huawei Local Security Checks | critical |
| 144169 | EulerOS 2.0 SP8 : nss-softokn (EulerOS-SA-2020-2523) | Nessus | Huawei Local Security Checks | critical |
| 143400 | EulerOS 2.0 SP9 : nss (EulerOS-SA-2020-2487) | Nessus | Huawei Local Security Checks | critical |
| 143390 | EulerOS 2.0 SP9 : nss (EulerOS-SA-2020-2500) | Nessus | Huawei Local Security Checks | critical |
| 141062 | Debian DLA-2388-1 : nss security update | Nessus | Debian Local Security Checks | critical |
| 138972 | GLSA-202007-49 : Mozilla Network Security Service (NSS): Information disclosure | Nessus | Gentoo Local Security Checks | medium |
| 138700 | openSUSE Security Update : mozilla-nspr / mozilla-nss (openSUSE-2020-854) | Nessus | SuSE Local Security Checks | critical |
| 138646 | Debian DSA-4726-1 : nss - security update | Nessus | Debian Local Security Checks | critical |
| 138326 | Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : Thunderbird vulnerabilities (USN-4421-1) | Nessus | Ubuntu Local Security Checks | high |
| 138314 | SUSE SLES12 Security Update : mozilla-nspr, mozilla-nss (SUSE-SU-2020:1839-1) | Nessus | SuSE Local Security Checks | critical |
| 138274 | SUSE SLED15 / SLES15 Security Update : mozilla-nspr, mozilla-nss (SUSE-SU-2020:1677-1) | Nessus | SuSE Local Security Checks | critical |
| 137909 | Debian DLA-2266-1 : nss security update | Nessus | Debian Local Security Checks | medium |
| 137555 | Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : NSS vulnerabilities (USN-4397-1) | Nessus | Ubuntu Local Security Checks | medium |
| 137417 | Debian DLA-2247-1 : thunderbird security update | Nessus | Debian Local Security Checks | high |
| 137375 | Debian DSA-4702-1 : thunderbird - security update | Nessus | Debian Local Security Checks | high |
| 137284 | Debian DLA-2243-1 : firefox-esr security update | Nessus | Debian Local Security Checks | high |
| 137179 | Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : firefox vulnerabilities (USN-4383-1) | Nessus | Ubuntu Local Security Checks | high |
| 137177 | Slackware 14.2 / current : mozilla-thunderbird (SSA:2020-156-01) | Nessus | Slackware Local Security Checks | high |
| 137155 | Debian DSA-4695-1 : firefox-esr - security update | Nessus | Debian Local Security Checks | high |
| 137087 | Mozilla Thunderbird < 68.9.0 | Nessus | Windows | high |
| 137086 | Mozilla Thunderbird < 68.9.0 | Nessus | MacOS X Local Security Checks | high |
| 137051 | Mozilla Firefox ESR < 68.9 | Nessus | Windows | medium |
| 137050 | Mozilla Firefox ESR < 68.9 | Nessus | MacOS X Local Security Checks | medium |
| 137049 | Mozilla Firefox < 77.0 | Nessus | Windows | high |
| 137048 | Mozilla Firefox < 77.0 | Nessus | MacOS X Local Security Checks | high |