CVE-2021-29970

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

A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1709976

https://www.mozilla.org/security/advisories/mfsa2021-30/

https://www.mozilla.org/security/advisories/mfsa2021-29/

https://www.mozilla.org/security/advisories/mfsa2021-28/

Details

Source: MITRE

Published: 2021-08-05

Updated: 2021-08-12

Type: CWE-416

Risk Information

CVSS v2

Base Score: 5.1

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

Impact Score: 6.4

Exploitability Score: 4.9

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

Tenable Plugins

View all (39 total)

IDNameProductFamilySeverity
153417Amazon Linux 2 : thunderbird (ALAS-2021-1709)NessusAmazon Linux Local Security Checks
high
152953Ubuntu 18.04 LTS / 20.04 LTS / 21.04 : Thunderbird vulnerabilities (USN-5058-1)NessusUbuntu Local Security Checks
high
152219openSUSE 15 Security Update : MozillaThunderbird (openSUSE-SU-2021:1091-1)NessusSuSE Local Security Checks
high
152168CentOS 8 : thunderbird (CESA-2021:2883)NessusCentOS Local Security Checks
high
152113SUSE SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:2478-1)NessusSuSE Local Security Checks
high
152097RHEL 8 : thunderbird (RHSA-2021:2914)NessusRed Hat Local Security Checks
high
152095Oracle Linux 7 : thunderbird (ELSA-2021-2881)NessusOracle Linux Local Security Checks
high
152093Oracle Linux 8 : thunderbird (ELSA-2021-2883)NessusOracle Linux Local Security Checks
high
152086Scientific Linux Security Update : thunderbird on SL7.x x86_64 (2021:2881)NessusScientific Linux Local Security Checks
high
152077RHEL 8 : thunderbird (RHSA-2021:2882)NessusRed Hat Local Security Checks
high
152076RHEL 8 : thunderbird (RHSA-2021:2883)NessusRed Hat Local Security Checks
high
152074RHEL 7 : thunderbird (RHSA-2021:2881)NessusRed Hat Local Security Checks
high
152023SUSE SLED15 / SLES15 Security Update : MozillaThunderbird (SUSE-SU-2021:2458-1)NessusSuSE Local Security Checks
high
152010openSUSE 15 Security Update : MozillaThunderbird (openSUSE-SU-2021:2458-1)NessusSuSE Local Security Checks
high
151841openSUSE 15 Security Update : MozillaFirefox (openSUSE-SU-2021:1066-1)NessusSuSE Local Security Checks
high
151820openSUSE 15 Security Update : MozillaFirefox (openSUSE-SU-2021:2393-1)NessusSuSE Local Security Checks
high
151813SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:2393-1)NessusSuSE Local Security Checks
high
151812Debian DLA-2711-1 : thunderbird - LTS security updateNessusDebian Local Security Checks
high
151807Debian DSA-4940-1 : thunderbird - security updateNessusDebian Local Security Checks
high
151805SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2021:2389-1)NessusSuSE Local Security Checks
high
151803SUSE SLES11 Security Update : MozillaFirefox (SUSE-SU-2021:14766-1)NessusSuSE Local Security Checks
high
151800Ubuntu 18.04 LTS / 20.04 LTS / 20.10 / 21.04 : Firefox vulnerabilities (USN-5011-1)NessusUbuntu Local Security Checks
high
151797CentOS 8 : firefox (CESA-2021:2743)NessusCentOS Local Security Checks
high
151682Oracle Linux 7 : firefox (ELSA-2021-2741)NessusOracle Linux Local Security Checks
high
151681Oracle Linux 8 : firefox (ELSA-2021-2743)NessusOracle Linux Local Security Checks
high
151678Scientific Linux Security Update : firefox on SL7.x i686/x86_64 (2021:2741)NessusScientific Linux Local Security Checks
high
151677Debian DLA-2709-1 : firefox-esr - LTS security updateNessusDebian Local Security Checks
high
151674CentOS 7 : firefox (CESA-2021:2741)NessusCentOS Local Security Checks
high
151671RHEL 7 : firefox (RHSA-2021:2741)NessusRed Hat Local Security Checks
high
151670RHEL 8 : firefox (RHSA-2021:2740)NessusRed Hat Local Security Checks
high
151669RHEL 8 : firefox (RHSA-2021:2743)NessusRed Hat Local Security Checks
high
151668RHEL 8 : firefox (RHSA-2021:2742)NessusRed Hat Local Security Checks
high
151667Debian DSA-4939-1 : firefox-esr - security updateNessusDebian Local Security Checks
high
151613Mozilla Thunderbird < 78.12NessusWindows
high
151612Mozilla Thunderbird < 78.12NessusMacOS X Local Security Checks
high
151574Mozilla Firefox ESR < 78.12NessusWindows
high
151573Mozilla Firefox ESR < 78.12NessusMacOS X Local Security Checks
high
151572Mozilla Firefox < 90.0NessusMacOS X Local Security Checks
critical
151571Mozilla Firefox < 90.0NessusWindows
critical