RHSA-2025:4649 - Security Advisory

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 8.

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 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

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