Insufficient Granularity of Access Control Affecting thunderbird-debugsource package, versions <0:128.10.0-1.el10_0


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (17th percentile)

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  • Snyk IDSNYK-RHEL10-THUNDERBIRDDEBUGSOURCE-10182327
  • published19 May 2025
  • disclosed15 Apr 2025

Introduced: 15 Apr 2025

CVE-2025-3522  (opens in a new tab)
CWE-1220  (opens in a new tab)

How to fix?

Upgrade RHEL:10 thunderbird-debugsource to version 0:128.10.0-1.el10_0 or higher.
This issue was patched in RHSA-2025:7507.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird-debugsource package and not the thunderbird-debugsource package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1