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RHEL 7: RHSA-2020:5235-01 Important: Thunderbird Security Flaws

red hat
Calendar Grey November 30, 2020
Dist Redhat Esm H88
A significant vulnerability patch for Thunderbird on CentOS aims to resolve various severe flaws.
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 78.5.0.
Security Fix(es):
* Mozilla: Parsing mismatches could confuse and bypass security sanitizer for chrome privileged code (CVE-2020-26951)
* Mozilla: Memory safety bugs fixed in Firefox 83 and Firefox ESR 78.5 (CVE-2020-26968)
* Mozilla: Variable time processing of cross-origin images during drawImage calls (CVE-2020-16012)
* Mozilla: Fullscreen could be enabled without displaying the security UI (CVE-2020-26953)
* Mozilla: XSS through paste (manual and clipboard API) (CVE-2020-26956)
* Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions (CVE-2020-26958)
* Mozilla: Use-after-free in WebRequestService (CVE-2020-26959)
* Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)
* Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)
* Mozilla: Software keyboards may have remembered typed passwords (CVE-2020-26965)
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 critical issue Red Hat update important security impact red hat enterprise thunderbird memory safety mail client important security fix cross-origin

References

https://access.redhat.com/security/cve/CVE-2020-16012 https://access.redhat.com/security/cve/CVE-2020-26951 https://access.redhat.com/security/cve/CVE-2020-26953 https://access.redhat.com/security/cve/CVE-2020-26956 https://access.redhat.com/security/cve/CVE-2020-26958 https://access.redhat.com/security/cve/CVE-2020-26959 https://access.redhat.com/security/cve/CVE-2020-26960 https://access.redhat.com/security/cve/CVE-2020-26961 https://access.redhat.com/security/cve/CVE-2020-26965 https://access.redhat.com/security/cve/CVE-2020-26968 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: thunderbird-78.5.0-1.el7_9.src.rpm
x86_64: thunderbird-78.5.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.5.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
Source: thunderbird-78.5.0-1.el7_9.src.rpm
ppc64le: thunderbird-78.5.0-1.el7_9.ppc64le.rpm thunderbird-debuginfo-78.5.0-1.el7_9.ppc64le.rpm
x86_64: thunderbird-78.5.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.5.0-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: thunderbird-78.5.0-1.el7_9.src.rpm
x86_64: thunderbird-78.5.0-1.el7_9.x86_64.rpm thunderbird-debuginfo-78.5.0-1.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-2020:5235-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:5235
Issue date: 2020-11-30

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 critical issue Red Hat update important security impact red hat enterprise thunderbird memory safety mail client important security fix cross-origin

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

1898731 - CVE-2020-26951 Mozilla: Parsing mismatches could confuse and bypass security sanitizer for chrome privileged code

1898732 - CVE-2020-16012 Mozilla: Variable time processing of cross-origin images during drawImage calls

1898733 - CVE-2020-26953 Mozilla: Fullscreen could be enabled without displaying the security UI

1898734 - CVE-2020-26956 Mozilla: XSS through paste (manual and clipboard API)

1898735 - CVE-2020-26958 Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions

1898736 - CVE-2020-26959 Mozilla: Use-after-free in WebRequestService

1898737 - CVE-2020-26960 Mozilla: Potential use-after-free in uses of nsTArray

1898738 - CVE-2020-26961 Mozilla: DoH did not filter IPv4 mapped IP Addresses

1898739 - CVE-2020-26965 Mozilla: Software keyboards may have remembered typed passwords

1898741 - CVE-2020-26968 Mozilla: Memory safety bugs fixed in Firefox 83 and Firefox ESR 78.5

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