RHSA-2023:6195 - Security Advisory

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.6 Extended Update Support.

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.

Description

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 115.4.1.

Security Fix(es):

• Mozilla: Queued up rendering could have allowed websites to clickjack (CVE-2023-5721)
• Mozilla: Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4 (CVE-2023-5730)
• libvpx: crash related to VP9 encoding in libvpx (CVE-2023-44488)
• Mozilla: Large WebGL draw could have led to a crash (CVE-2023-5724)
• Mozilla: WebExtensions could open arbitrary URLs (CVE-2023-5725)
• Mozilla: Improper object tracking during GC in the JavaScript engine could have led to a crash. (CVE-2023-5728)
• Mozilla: Address bar spoofing via bidirectional characters (CVE-2023-5732)

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.

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.

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

• BZ - 2241806 - CVE-2023-44488 libvpx: crash related to VP9 encoding in libvpx
• BZ - 2245896 - CVE-2023-5721 Mozilla: Queued up rendering could have allowed websites to clickjack
• BZ - 2245898 - CVE-2023-5732 Mozilla: Address bar spoofing via bidirectional characters
• BZ - 2245899 - CVE-2023-5724 Mozilla: Large WebGL draw could have led to a crash
• BZ - 2245900 - CVE-2023-5725 Mozilla: WebExtensions could open arbitrary URLs
• BZ - 2245903 - CVE-2023-5728 Mozilla: Improper object tracking during GC in the JavaScript engine could have led to a crash.
• BZ - 2245906 - CVE-2023-5730 Mozilla: Memory safety bugs fixed in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4

CVEs

• CVE-2023-5721
• CVE-2023-5724
• CVE-2023-5725
• CVE-2023-5728
• CVE-2023-5730
• CVE-2023-5732
• CVE-2023-44488

References

• https://access.redhat.com/security/updates/classification/#important