Subject: [ASA-201703-10] roundcubemail: cross-site scripting

Arch Linux Security Advisory ASA-201703-10
==========================================

Severity: Medium
Date    : 2017-03-14
CVE-ID  : CVE-2017-6820
Package : roundcubemail
Type    : cross-site scripting
Remote  : Yes
Link    : https://security.archlinux.org/AVG-199

Summary
=======

The package roundcubemail before version 1.2.4-1 is vulnerable to
cross-site scripting.

Resolution
==========

Upgrade to 1.2.4-1.

# pacman -Syu "roundcubemail>=1.2.4-1"

The problem has been fixed upstream in version 1.2.4.

Workaround
==========

None.

Description
===========

It has been discovered that rcube_utils.php in Roundcube before 1.1.8
and before 1.2.4 is susceptible to a cross-site scripting vulnerability
via a crafted Cascading Style Sheets (CSS) token sequence within an SVG
element.

Impact
======

A remote attacker is able to use a specially crafted SVG file to
execute arbitrary javascript on the client's machine.

References
==========

http://seclists.org/oss-sec/2017/q1/583
https://roundcube.net/news/2017/03/10/updates-1.2.4-and-1.1.8-released
https://github.com/roundcube/roundcubemail/commit/fa2824fdcd44af3f970b2797feb47652482c8305
https://github.com/roundcube/roundcubemail/commit/cbd35626f7db7855f3b5e2db00d28ecc1554e9f4
https://security.archlinux.org/CVE-2017-6820