Mozilla releases security updates for Firefox 91 and Firefox ESR 78.13

Mozilla releases security updates for Firefox 91 and Firefox ESR 78.13

Hello everyone,

Mozilla has fixed several high severity security vulnerabilities in  Firefox 91 and Firefox ESR 78.13. The details of the vulnerabilities fixed are as follows:

 Platform CVE ID Vulnerability Impact
 Firefox 91, Firefox ESR 78.13 CVE-2021-29980 Uninitialized memory in a canvas object could have led to memory corruption High
 Firefox 91 CVE-2021-29981 Live range splitting could have led to conflicting assignments in the JIT High 
 Firefox 91 CVE-2021-29982 Single bit data leak due to incorrect JIT optimization and type confusion Low
 Firefox 91 CVE-2021-29983 Firefox for Android could get stuck in fullscreen mode High
 Firefox 91, Firefox ESR 78.13 CVE-2021-29984 Incorrect instruction reordering during JIT optimization High
 Firefox 91, Firefox ESR 78.13 CVE-2021-29985 Use-after-free media channels Moderate
 Firefox 91, Firefox ESR 78.13 CVE-2021-29986 Race condition when resolving DNS names could have led to memory corruption High
 Firefox 91 CVE-2021-29987 Users could have been tricked into accepting unwanted permissions on Linux Moderate
 Firefox 91, Firefox ESR 78.13 CVE-2021-29988 Memory corruption as a result of incorrect style treatment High
 Firefox 91, Firefox ESR 78.13 CVE-2021-29989 Memory safety bugs fixed in Firefox 91 and Firefox ESR 78.13 High
 Firefox 91 CVE-2021-29990 Memory safety bugs fixed in Firefox 91 High

To patch these vulnerabilities, initiate a sync between the Central Patch Repository and the Vulnerability Manager Plus server. Once synced, search for the following Patch IDs or Bulletin IDs and deploy them to your target systems.

 Patch ID Bulletin ID Patch Description
 320915 TU-027 Mozilla Firefox (91.0)
 320916 TU-027 Mozilla Firefox (x64) (91.0)
 320917 TU-054 Mozilla Firefox ESR (78.13.0)
 320918 TU-054 Mozilla Firefox ESR (x64) (78.13.0)

Cheers,

The ManageEngine Team