CVE-2021-29989

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

Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.13, Firefox ESR < 78.13, and Firefox < 91.

References

https://www.mozilla.org/security/advisories/mfsa2021-34/

https://www.mozilla.org/security/advisories/mfsa2021-33/

https://www.mozilla.org/security/advisories/mfsa2021-35/

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1662676%2C1666184%2C1719178%2C1719998%2C1720568

Details

Source: MITRE

Published: 2021-08-17

Updated: 2021-08-25

Type: CWE-119

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

Tenable Plugins

View all (47 total)

IDNameProductFamilySeverity
154214openSUSE 15 Security Update : MozillaFirefox (openSUSE-SU-2021:1367-1)NessusSuSE Local Security Checks
high
154212SUSE SLES11 Security Update : MozillaFirefox, rust-cbindgen (SUSE-SU-2021:14826-1)NessusSuSE Local Security Checks
high
154193openSUSE 15 Security Update : MozillaFirefox (openSUSE-SU-2021:3451-1)NessusSuSE Local Security Checks
high
154182SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:3451-1)NessusSuSE Local Security Checks
high
154011openSUSE 15 Security Update : MozillaFirefox (openSUSE-SU-2021:3331-1)NessusSuSE Local Security Checks
high
154003SUSE SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:3331-1)NessusSuSE Local Security Checks
high
153840SUSE SLES11 Security Update : MozillaFirefox (SUSE-SU-2021:14821-1)NessusSuSE Local Security Checks
high
153576SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2021:3191-1)NessusSuSE Local Security Checks
high
152589RHEL 8 : firefox (RHSA-2021:3159)NessusRed Hat Local Security Checks
high
153417Amazon Linux 2 : thunderbird (ALAS-2021-1709)NessusAmazon Linux Local Security Checks
high
153132Debian DLA-2745-1 : thunderbird - LTS security updateNessusDebian Local Security Checks
high
152960openSUSE 15 Security Update : MozillaThunderbird (openSUSE-SU-2021:2874-1)NessusSuSE Local Security Checks
high
152953Ubuntu 18.04 LTS / 20.04 LTS / 21.04 : Thunderbird vulnerabilities (USN-5058-1)NessusUbuntu Local Security Checks
high
152920SUSE SLED15 / SLES15 Security Update : MozillaThunderbird (SUSE-SU-2021:2874-1)NessusSuSE Local Security Checks
high
152769openSUSE 15 Security Update : MozillaFirefox (openSUSE-SU-2021:1184-1)NessusSuSE Local Security Checks
high
152695openSUSE 15 Security Update : MozillaFirefox (openSUSE-SU-2021:2774-1)NessusSuSE Local Security Checks
high
152690SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:2774-1)NessusSuSE Local Security Checks
high
152666CentOS 7 : thunderbird (CESA-2021:3160)NessusCentOS Local Security Checks
high
152663CentOS 7 : firefox (CESA-2021:3154)NessusCentOS Local Security Checks
high
152651SUSE SLES15 Security Update : MozillaFirefox (SUSE-SU-2021:2694-1)NessusSuSE Local Security Checks
high
152649SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2021:2691-1)NessusSuSE Local Security Checks
high
152626Oracle Linux 8 : thunderbird (ELSA-2021-3155)NessusOracle Linux Local Security Checks
high
152617Oracle Linux 7 : thunderbird (ELSA-2021-3160)NessusOracle Linux Local Security Checks
high
152616Oracle Linux 7 : firefox (ELSA-2021-3154)NessusOracle Linux Local Security Checks
high
152614Oracle Linux 8 : firefox (ELSA-2021-3157)NessusOracle Linux Local Security Checks
high
152603RHEL 8 : firefox (RHSA-2021:3157)NessusRed Hat Local Security Checks
high
152602RHEL 7 : thunderbird (RHSA-2021:3160)NessusRed Hat Local Security Checks
high
152600RHEL 8 : thunderbird (RHSA-2021:3155)NessusRed Hat Local Security Checks
high
152599RHEL 8 : thunderbird (RHSA-2021:3162)NessusRed Hat Local Security Checks
high
152594CentOS 8 : firefox (CESA-2021:3157)NessusCentOS Local Security Checks
high
152581RHEL 7 : firefox (RHSA-2021:3154)NessusRed Hat Local Security Checks
high
152580RHEL 8 : thunderbird (RHSA-2021:3161)NessusRed Hat Local Security Checks
high
152577RHEL 8 : firefox (RHSA-2021:3156)NessusRed Hat Local Security Checks
high
152576CentOS 8 : thunderbird (CESA-2021:3155)NessusCentOS Local Security Checks
high
152568Debian DSA-4959-1 : thunderbird - security updateNessusDebian Local Security Checks
high
152544SUSE SLES11 Security Update : MozillaFirefox (SUSE-SU-2021:14782-1)NessusSuSE Local Security Checks
high
152535Debian DLA-2740-1 : firefox-esr - LTS security updateNessusDebian Local Security Checks
high
152516Debian DSA-4956-1 : firefox-esr - security updateNessusDebian Local Security Checks
high
152508Ubuntu 18.04 LTS / 20.04 LTS / 21.04 : Firefox vulnerabilities (USN-5037-1)NessusUbuntu Local Security Checks
high
152504Mozilla Thunderbird < 91.0NessusMacOS X Local Security Checks
high
152503Mozilla Thunderbird < 91.0NessusWindows
high
152453Mozilla Thunderbird < 78.13NessusMacOS X Local Security Checks
high
152452Mozilla Thunderbird < 78.13NessusWindows
high
152415Mozilla Firefox ESR < 78.13NessusMacOS X Local Security Checks
high
152414Mozilla Firefox ESR < 78.13NessusWindows
high
152413Mozilla Firefox < 91.0NessusMacOS X Local Security Checks
high
152412Mozilla Firefox < 91.0NessusWindows
high