VULNERABILITY

Oracle Linux: CVE-2025-3522: ELSA-2025-4229: thunderbird security update (IMPORTANT)

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Oracle Linux: CVE-2025-3522: ELSA-2025-4229: thunderbird security update (IMPORTANT)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:C/I:N/A:N)
Published
04/15/2025
Created
04/29/2025
Added
04/29/2025
Modified
04/29/2025

Description

Thunderbird processes the X-Mozilla-External-Attachment-URL header to handle attachments which can be hosted externally. When an email is opened, Thunderbird accesses the specified URL to determine file size, and navigates to it when the user clicks the attachment. Because the URL is not validated or sanitized, it can reference internal resources like chrome:// or SMB share file:// links, potentially leading to hashed Windows credential leakage and opening the door to more serious security issues. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.

Solution(s)

  • oracle-linux-upgrade-thunderbird

References

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