[Pkg-roundcube-maintainers] Bug#895184: roundcube: CVE-2018-9846: check_request() bypass in archive plugin

[Salvatore Bonaccorso]

Source: roundcube
Version: 1.2.3+dfsg.1-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/roundcube/roundcubemail/issues/6238

Hi,

The following vulnerability was published for roundcube.

CVE-2018-9846[0]:
| In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin
| enabled and configured, it's possible to exploit the unsanitized,
| user-controlled "_uid" parameter (in an archive.php
| _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform
| an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a
| sequence. NOTE: this is less easily exploitable in 1.3.4 and later
| because of a Same Origin Policy protection mechanism.

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-2018-9846
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9846
[1] https://github.com/roundcube/roundcubemail/issues/6238

Regards,
Salvatore