CVE-2019-11756

high
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

Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited to a denial of service). This vulnerability affects Firefox < 71.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1508776

https://www.mozilla.org/security/advisories/mfsa2019-36/

Details

Source: MITRE

Published: 2020-01-08

Updated: 2020-01-13

Type: CWE-416

Risk Information

CVSS v2

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Tenable Plugins

View all (18 total)

IDNameProductFamilySeverity
154457NewStart CGSL CORE 5.05 / MAIN 5.05 : nss Multiple Vulnerabilities (NS-SA-2021-0156)NessusNewStart CGSL Local Security Checks
critical
151520Amazon Linux AMI : nspr, nss-softokn, nss-util (ALAS-2021-1522)NessusAmazon Linux Local Security Checks
critical
148888RHEL 7 : nss-softokn (RHSA-2021:1026)NessusRed Hat Local Security Checks
critical
147829RHEL 7 : nss and nss-softokn (RHSA-2021:0876)NessusRed Hat Local Security Checks
critical
147361NewStart CGSL CORE 5.04 / MAIN 5.04 : nss Multiple Vulnerabilities (NS-SA-2021-0019)NessusNewStart CGSL Local Security Checks
critical
147281NewStart CGSL MAIN 6.02 : nss Multiple Vulnerabilities (NS-SA-2021-0053)NessusNewStart CGSL Local Security Checks
critical
147208RHEL 7 : nss-softokn (RHSA-2021:0758)NessusRed Hat Local Security Checks
critical
145878CentOS 8 : nss and nspr (CESA-2020:3280)NessusCentOS Local Security Checks
critical
142720Amazon Linux 2 : nspr (ALAS-2020-1559)NessusAmazon Linux Local Security Checks
critical
142600CentOS 7 : nss and nspr (CESA-2020:4076)NessusCentOS Local Security Checks
critical
141689Scientific Linux Security Update : nss and nspr on SL7.x x86_64 (20201001)NessusScientific Linux Local Security Checks
critical
141312Oracle Linux 7 : nss / and / nspr (ELSA-2020-4076)NessusOracle Linux Local Security Checks
critical
141059RHEL 7 : nss and nspr (RHSA-2020:4076)NessusRed Hat Local Security Checks
critical
139397Oracle Linux 8 : nspr / nss (ELSA-2020-3280)NessusOracle Linux Local Security Checks
high
139293RHEL 8 : nss and nspr (RHSA-2020:3280)NessusRed Hat Local Security Checks
critical
131924Ubuntu 18.04 LTS / 19.04 / 19.10 : firefox vulnerabilities (USN-4216-1)NessusUbuntu Local Security Checks
high
131773Mozilla Firefox < 71.0NessusWindows
high
131772Mozilla Firefox < 71.0NessusMacOS X Local Security Checks
high