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Red Hat: RHSA-2021-3160-01 Important: Thunderbird Security Fix

red hat
Calendar Grey August 16, 2021
Dist Redhat Esm H88
Security update for Thunderbird on Red Hat designated as Critical. Upgrade recommended to address memory vulnerabilities and enhance overall reliability.
An update for thunderbird is now available for Red Hat Enterprise Linux 7

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

All running instances of Thunderbird must be restarted for the update to take effect.

Summary

Mozilla Thunderbird is a standalone mail and newsgroup client.
This update upgrades Thunderbird to version 78.13.0.
Security Fix(es):
* Mozilla: Uninitialized memory in a canvas object could have led to memory corruption (CVE-2021-29980)
* Mozilla: Incorrect instruction reordering during JIT optimization (CVE-2021-29984)
* Mozilla: Race condition when resolving DNS names could have led to memory corruption (CVE-2021-29986)
* Mozilla: Memory corruption as a result of incorrect style treatment (CVE-2021-29988)
* Mozilla: Memory safety bugs fixed in Thunderbird 78.13 (CVE-2021-29989)
* Mozilla: Use-after-free media channels (CVE-2021-29985)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory memory corruption Red Hat Enterprise Linux software upgrade thunderbird update important security issue

References

https://access.redhat.com/security/cve/CVE-2021-29980 https://access.redhat.com/security/cve/CVE-2021-29984 https://access.redhat.com/security/cve/CVE-2021-29985 https://access.redhat.com/security/cve/CVE-2021-29986 https://access.redhat.com/security/cve/CVE-2021-29988 https://access.redhat.com/security/cve/CVE-2021-29989 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: thunderbird-78.13.0-1.el7_9.src.rpm
x86_64: thunderbird-78.13.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.13.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
Source: thunderbird-78.13.0-1.el7_9.src.rpm
ppc64le: thunderbird-78.13.0-1.el7_9.ppc64le.rpm thunderbird-debuginfo-78.13.0-1.el7_9.ppc64le.rpm
x86_64: thunderbird-78.13.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.13.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: thunderbird-78.13.0-1.el7_9.src.rpm
x86_64: thunderbird-78.13.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.13.0-1.el7_9.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:3160-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3160
Issue date: 2021-08-16

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory memory corruption Red Hat Enterprise Linux software upgrade thunderbird update important security issue

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Bugs Fixed

1992417 - CVE-2021-29986 Mozilla: Race condition when resolving DNS names could have led to memory corruption

1992419 - CVE-2021-29988 Mozilla: Memory corruption as a result of incorrect style treatment

1992420 - CVE-2021-29984 Mozilla: Incorrect instruction reordering during JIT optimization

1992421 - CVE-2021-29980 Mozilla: Uninitialized memory in a canvas object could have led to memory corruption

1992422 - CVE-2021-29985 Mozilla: Use-after-free media channels

1992423 - CVE-2021-29989 Mozilla: Memory safety bugs fixed in Thunderbird 78.13

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