vulnerability

SUSE: CVE-2025-3909: SUSE Linux Security Advisory

Severity
9
CVSS
(AV:N/AC:M/Au:N/C:P/I:C/A:C)
Published
May 14, 2025
Added
May 26, 2025
Modified
May 30, 2025

Description

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. This vulnerability affects Thunderbird

Solution(s)

suse-upgrade-mozillathunderbirdsuse-upgrade-mozillathunderbird-translations-commonsuse-upgrade-mozillathunderbird-translations-other
Title
NEW

Explore Exposure Command

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