[ASA-202102-27] roundcubemail: cross-site scripting

[Morten Linderud]

Arch Linux Security Advisory ASA-202102-27
==========================================

Severity: High
Date    : 2021-02-12
CVE-ID  : CVE-2021-26925
Package : roundcubemail
Type    : cross-site scripting
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1551

Summary
=======

The package roundcubemail before version 1.4.11-1 is vulnerable to
cross-site scripting.

Resolution
==========

Upgrade to 1.4.11-1.

# pacman -Syu "roundcubemail>=1.4.11-1"

The problem has been fixed upstream in version 1.4.11.

Workaround
==========

None.

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

Roundcube before 1.4.11 allows cross-site scripting (XSS) via crafted
Cascading Style Sheets (CSS) token sequences during HTML email
rendering.

Impact
======

A remote attacker might be able to perform cross-site scripting via
crafted CSS content in a HTML message.

References
==========

https://roundcube.net/news/2021/02/08/security-update-1.4.11
https://github.com/roundcube/roundcubemail/commit/9dc276d5f26042db02754fa1bac6fbd683c6d596
https://security.archlinux.org/CVE-2021-26925
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