Bug#1027160: xdg-utils: CVE-2022-4055

[Moritz Mühlenhoff]

Source: xdg-utils
X-Debbugs-CC: team at security.debian.org
Severity: important
Tags: security

Hi,

The following vulnerability was published for xdg-utils.

CVE-2022-4055[0]:
| 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.

https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/205#note_1494267

Proposed fix (not merged/appoved yet):
https://gitlab.freedesktop.org/xdg/xdg-utils/-/merge_requests/58

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2022-4055
    https://www.cve.org/CVERecord?id=CVE-2022-4055

Please adjust the affected versions in the BTS as needed.