RHSA-2025:4665 - Security Advisory

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

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.

Security Fix(es):

• thunderbird: User Interface (UI) Misrepresentation of attachment URL (CVE-2025-3523)
• thunderbird: Information Disclosure of /tmp directory listing (CVE-2025-2830)
• thunderbird: Leak of hashed Window credentials via crafted attachment URL (CVE-2025-3522)

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

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• 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 - 2359786 - CVE-2025-3523 thunderbird: User Interface (UI) Misrepresentation of attachment URL
• BZ - 2359789 - CVE-2025-2830 thunderbird: Information Disclosure of /tmp directory listing
• BZ - 2359793 - CVE-2025-3522 thunderbird: Leak of hashed Window credentials via crafted attachment URL

CVEs

• CVE-2025-2830
• CVE-2025-3522
• CVE-2025-3523

References

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