Bug 2366283 (CVE-2025-3909)
| Summary: | CVE-2025-3909 thunderbird: JavaScript Execution via Spoofed PDF Attachment and file:/// Link | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | gotiwari, jhorak, mvyas, tpopela |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
The Mozilla Foundation's Security Advisory describes the following issue: Thunderbird's handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the file:/// context. By crafting a nested email attachment (message/rfc822) and setting its content type to application/pdf, Thunderbird may incorrectly render it as HTML when opened, allowing the embedded JavaScript to run without requiring a file download. This behavior relies on Thunderbird auto-saving the attachment to /tmp and linking to it via the file:/// protocol, potentially enabling JavaScript execution as part of the HTML.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2025-05-14 18:01:33 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2025:8196 https://access.redhat.com/errata/RHSA-2025:8196 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2025:8203 https://access.redhat.com/errata/RHSA-2025:8203 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Extended Update Support Via RHSA-2025:8326 https://access.redhat.com/errata/RHSA-2025:8326 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Via RHSA-2025:8324 https://access.redhat.com/errata/RHSA-2025:8324 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Extended Update Support Via RHSA-2025:8325 https://access.redhat.com/errata/RHSA-2025:8325 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Advanced Update Support Via RHSA-2025:8391 https://access.redhat.com/errata/RHSA-2025:8391 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Via RHSA-2025:8507 https://access.redhat.com/errata/RHSA-2025:8507 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Red Hat Enterprise Linux 8.6 Telecommunications Update Service Via RHSA-2025:8594 https://access.redhat.com/errata/RHSA-2025:8594 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2025:8756 https://access.redhat.com/errata/RHSA-2025:8756 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2025:8784 https://access.redhat.com/errata/RHSA-2025:8784 |