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Red Hat 7: RHSA-2020-5618-01 Important: Thunderbird Security Issue

red hat
Calendar Grey December 17, 2020
Dist Redhat Esm H88
A critical patch has just been released for Thunderbird on Red Hat Enterprise Linux 7, resolving various vulnerabilities.
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 78.6.0.
Security Fix(es):
* chromium-browser: Uninitialized Use in V8 (CVE-2020-16042)
* Mozilla: Heap buffer overflow in WebGL (CVE-2020-26971)
* Mozilla: CSS Sanitizer performed incorrect sanitization (CVE-2020-26973)
* Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap use-after-free (CVE-2020-26974)
* Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6 (CVE-2020-35113)
* Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2020-26978)
* Mozilla: The proxy.onRequest API did not catch view-source URLs (CVE-2020-35111)
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 security issue Red Hat update important software fix thunderbird mail client

References

https://access.redhat.com/security/cve/CVE-2020-16042 https://access.redhat.com/security/cve/CVE-2020-26971 https://access.redhat.com/security/cve/CVE-2020-26973 https://access.redhat.com/security/cve/CVE-2020-26974 https://access.redhat.com/security/cve/CVE-2020-26978 https://access.redhat.com/security/cve/CVE-2020-35111 https://access.redhat.com/security/cve/CVE-2020-35113 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: thunderbird-78.6.0-1.el7_9.src.rpm
x86_64: thunderbird-78.6.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.6.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
Source: thunderbird-78.6.0-1.el7_9.src.rpm
ppc64le: thunderbird-78.6.0-1.el7_9.ppc64le.rpm thunderbird-debuginfo-78.6.0-1.el7_9.ppc64le.rpm
x86_64: thunderbird-78.6.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.6.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: thunderbird-78.6.0-1.el7_9.src.rpm
x86_64: thunderbird-78.6.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.6.0-1.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-2020:5618-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5618
Issue date: 2020-12-17

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 security issue Red Hat update important software fix thunderbird mail client

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

1904515 - CVE-2020-16042 chromium-browser: Uninitialized Use in V8

1908022 - CVE-2020-26971 Mozilla: Heap buffer overflow in WebGL

1908023 - CVE-2020-26973 Mozilla: CSS Sanitizer performed incorrect sanitization

1908024 - CVE-2020-26974 Mozilla: Incorrect cast of StyleGenericFlexBasis resulted in a heap use-after-free

1908025 - CVE-2020-26978 Mozilla: Internal network hosts could have been probed by a malicious webpage

1908027 - CVE-2020-35111 Mozilla: The proxy.onRequest API did not catch view-source URLs

1908029 - CVE-2020-35113 Mozilla: Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6

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