Alerts This Week
Warning Icon 1 692
Alerts This Week
Warning Icon 1 692

Red Hat: RHSA-2020-5399-01 Important: Thunderbird Stack Overflow Issue

red hat
Calendar Grey December 14, 2020
Dist Redhat Esm H88
Significant Thunderbird patch rolled out for Red Hat Enterprise Linux, resolving a serious stack overflow vulnerability.
An update for thunderbird is now available for Red Hat Enterprise Linux 8.2 Extended Update Support

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 78.5.1.
Security Fix(es):
* Mozilla: Stack overflow due to incorrect parsing of SMTP server response codes (CVE-2020-26970)
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 red hat important thunderbird stack overflow mail client

References

https://access.redhat.com/security/cve/CVE-2020-26970 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source: thunderbird-78.5.1-1.el8_2.src.rpm
aarch64: thunderbird-78.5.1-1.el8_2.aarch64.rpm thunderbird-debuginfo-78.5.1-1.el8_2.aarch64.rpm thunderbird-debugsource-78.5.1-1.el8_2.aarch64.rpm
ppc64le: thunderbird-78.5.1-1.el8_2.ppc64le.rpm thunderbird-debuginfo-78.5.1-1.el8_2.ppc64le.rpm thunderbird-debugsource-78.5.1-1.el8_2.ppc64le.rpm
x86_64: thunderbird-78.5.1-1.el8_2.x86_64.rpm thunderbird-debuginfo-78.5.1-1.el8_2.x86_64.rpm thunderbird-debugsource-78.5.1-1.el8_2.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-2020:5399-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5399
Issue date: 2020-12-14

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.2Extended Update Support.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 red hat important thunderbird stack overflow mail client

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v. 8.2) - aarch64, ppc64le, x86_64

Bugs Fixed

1903443 - CVE-2020-26970 Mozilla: Stack overflow due to incorrect parsing of SMTP server response codes

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here