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Red Hat Enterprise Linux 8: RHSA-2020-1495-01 Important: Thunderbird Update

red hat
Calendar Grey April 16, 2020
Dist Redhat Esm H88
An essential security patch for Thunderbird running on Red Hat Enterprise Linux has been released to tackle critical security vulnerabilities.

An update for thunderbird is now available for Red Hat Enterprise Linux 8

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 68.7.0.
Security Fix(es):
* Mozilla: Use-after-free while running the nsDocShell destructor (CVE-2020-6819)
* Mozilla: Use-after-free when handling a ReadableStream (CVE-2020-6820)
* Mozilla: Uninitialized memory could be read when using the WebGL copyTexSubImage method (CVE-2020-6821)
* Mozilla: Memory safety bugs fixed in Firefox 75 and Firefox ESR 68.7 (CVE-2020-6825)
* Mozilla: Out of bounds write in GMPDecodeData when processing large images (CVE-2020-6822)
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 Red Hat update buffer overflow important thunderbird memory safety

References

https://access.redhat.com/security/cve/CVE-2020-6819 https://access.redhat.com/security/cve/CVE-2020-6820 https://access.redhat.com/security/cve/CVE-2020-6821 https://access.redhat.com/security/cve/CVE-2020-6822 https://access.redhat.com/security/cve/CVE-2020-6825 https://access.redhat.com/security/updates/classification/#important https://www.mozilla.org/en-US/security/advisories/mfsa2020-14/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: thunderbird-68.7.0-1.el8_1.src.rpm
ppc64le: thunderbird-68.7.0-1.el8_1.ppc64le.rpm thunderbird-debuginfo-68.7.0-1.el8_1.ppc64le.rpm thunderbird-debugsource-68.7.0-1.el8_1.ppc64le.rpm
x86_64: thunderbird-68.7.0-1.el8_1.x86_64.rpm thunderbird-debuginfo-68.7.0-1.el8_1.x86_64.rpm thunderbird-debugsource-68.7.0-1.el8_1.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-2020:1495-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1495
Issue date: 2020-04-16

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat update buffer overflow important thunderbird memory safety

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - ppc64le, x86_64

Bugs Fixed

1820869 - CVE-2020-6819 Mozilla: Use-after-free while running the nsDocShell destructor

1820878 - CVE-2020-6820 Mozilla: Use-after-free when handling a ReadableStream

1821674 - CVE-2020-6821 Mozilla: Uninitialized memory could be read when using the WebGL copyTexSubImage method

1821676 - CVE-2020-6822 Mozilla: Out of bounds write in GMPDecodeData when processing large images

1821682 - CVE-2020-6825 Mozilla: Memory safety bugs fixed in Firefox 75 and Firefox ESR 68.7

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