Alerts This Week
Warning Icon 1 714
Alerts This Week
Warning Icon 1 714

Red Hat Enterprise Linux 8.2: RHSA-2021-1352 Important: Thunderbird Update

red hat
Calendar Grey April 26, 2021
Dist Redhat Esm H88
Red Hat's crucial Thunderbird upgrade tackles significant security vulnerabilities for Enterprise Linux 8.2.
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 78.10.0.
Security Fix(es):
* Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994)
* Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995)
* Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961)
* Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998)
* Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999)
* Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002)
* Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945)
* Mozilla: Port blocking could be bypassed (CVE-2021-29946)
* Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)
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 fix important red hat enterprise linux out of bounds thunderbird update use-after-free

References

https://access.redhat.com/security/cve/CVE-2021-23961 https://access.redhat.com/security/cve/CVE-2021-23994 https://access.redhat.com/security/cve/CVE-2021-23995 https://access.redhat.com/security/cve/CVE-2021-23998 https://access.redhat.com/security/cve/CVE-2021-23999 https://access.redhat.com/security/cve/CVE-2021-24002 https://access.redhat.com/security/cve/CVE-2021-29945 https://access.redhat.com/security/cve/CVE-2021-29946 https://access.redhat.com/security/cve/CVE-2021-29948 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream EUS (v. 8.2):
Source: thunderbird-78.10.0-1.el8_2.src.rpm
aarch64: thunderbird-78.10.0-1.el8_2.aarch64.rpm thunderbird-debuginfo-78.10.0-1.el8_2.aarch64.rpm thunderbird-debugsource-78.10.0-1.el8_2.aarch64.rpm
ppc64le: thunderbird-78.10.0-1.el8_2.ppc64le.rpm thunderbird-debuginfo-78.10.0-1.el8_2.ppc64le.rpm thunderbird-debugsource-78.10.0-1.el8_2.ppc64le.rpm
x86_64: thunderbird-78.10.0-1.el8_2.x86_64.rpm thunderbird-debuginfo-78.10.0-1.el8_2.x86_64.rpm thunderbird-debugsource-78.10.0-1.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-2021:1352-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1352
Issue date: 2021-04-26

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 fix important red hat enterprise linux out of bounds thunderbird update use-after-free

Relevant Releases Architectures

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

Bugs Fixed

1951364 - CVE-2021-23994 Mozilla: Out of bound write due to lazy initialization

1951365 - CVE-2021-23995 Mozilla: Use-after-free in Responsive Design Mode

1951366 - CVE-2021-23998 Mozilla: Secure Lock icon could have been spoofed

1951367 - CVE-2021-23961 Mozilla: More internal network hosts could have been probed by a malicious webpage

1951368 - CVE-2021-23999 Mozilla: Blob URLs may have been granted additional privileges

1951369 - CVE-2021-24002 Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL

1951370 - CVE-2021-29945 Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads

1951371 - CVE-2021-29946 Mozilla: Port blocking could be bypassed

1951381 - CVE-2021-29948 Mozilla: Race condition when reading from disk while verifying signatures

Get the latest News and Insights

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

Your message here