Bug 882079 (CVE-2022-4055)

Summary:	x11-misc/xdg-utils: xdg-email mailto thunderbird mishandling
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	CONFIRMED ---
Severity:	minor	CC:	freedesktop-bugs
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/205
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=756838
Whiteboard:	B4 [upstream]
Package list:		Runtime testing required:	---

Description John Helmert III archtester

2022-11-20 03:12:57 UTC

CVE-2022-4055:

When xdg-mail is configured to use thunderbird for mailto URLs, improper parsing of the URL can lead to additional headers being passed to thunderbird that should not be included per RFC 2368. An attacker can use this method to create a mailto URL that looks safe to users, but will actually attach files when clicked.

Note that "This is different from Issue 177 where the handling of
attachments is intended. Here it is not." where issue 177 is our bug 756838.