# Security update for MozillaThunderbird

Announcement ID: SUSE-SU-2025:01660-1  
Release Date: 2025-05-22T16:01:52Z  
Rating: important  
References:

  * bsc#1243216

  
Cross-References:

  * CVE-2025-3875
  * CVE-2025-3877
  * CVE-2025-3909
  * CVE-2025-3932

  
CVSS scores:

  * CVE-2025-3875 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2025-3877 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
  * CVE-2025-3909 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-3932 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

  
Affected Products:

  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Workstation Extension 15 SP6
  * SUSE Package Hub 15 15-SP6

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for MozillaThunderbird fixes the following issues:

Update to Mozilla Thunderbird 128.10.1.

Security fixes:

  * MFSA 2025-34 (bsc#1243216)
  * CVE-2025-3875: Sender Spoofing via Malformed From Header in Thunderbird.
  * CVE-2025-3877: Unsolicited File Download, Disk Space Exhaustion, and
    Credential Leakage via mailbox:/// Links.
  * CVE-2025-3909: JavaScript Execution via Spoofed PDF Attachment and file:///
    Link.
  * CVE-2025-3932: Tracking Links in Attachments Bypassed Remote Content
    Blocking.

Other bug fixes:

  * Fixed: standalone message windows/tabs that no longer responded after folder
    compaction.
  * Fixed: Thunderbird could crash when importing Outlook messages.
  * Visual and UX improvements.

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2025-1660=1

  * SUSE Package Hub 15 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2025-1660=1

  * SUSE Linux Enterprise Workstation Extension 15 SP6  
    zypper in -t patch SUSE-SLE-Product-WE-15-SP6-2025-1660=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * MozillaThunderbird-translations-common-128.10.1-150200.8.215.1
    * MozillaThunderbird-translations-other-128.10.1-150200.8.215.1
    * MozillaThunderbird-debuginfo-128.10.1-150200.8.215.1
    * MozillaThunderbird-128.10.1-150200.8.215.1
    * MozillaThunderbird-debugsource-128.10.1-150200.8.215.1
  * SUSE Package Hub 15 15-SP6 (aarch64 ppc64le s390x)
    * MozillaThunderbird-translations-common-128.10.1-150200.8.215.1
    * MozillaThunderbird-translations-other-128.10.1-150200.8.215.1
    * MozillaThunderbird-debuginfo-128.10.1-150200.8.215.1
    * MozillaThunderbird-128.10.1-150200.8.215.1
    * MozillaThunderbird-debugsource-128.10.1-150200.8.215.1
  * SUSE Linux Enterprise Workstation Extension 15 SP6 (x86_64)
    * MozillaThunderbird-translations-common-128.10.1-150200.8.215.1
    * MozillaThunderbird-translations-other-128.10.1-150200.8.215.1
    * MozillaThunderbird-debuginfo-128.10.1-150200.8.215.1
    * MozillaThunderbird-128.10.1-150200.8.215.1
    * MozillaThunderbird-debugsource-128.10.1-150200.8.215.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-3875.html
  * https://www.suse.com/security/cve/CVE-2025-3877.html
  * https://www.suse.com/security/cve/CVE-2025-3909.html
  * https://www.suse.com/security/cve/CVE-2025-3932.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1243216