Arch Linux Security Advisory ASA-201601-18 ========================================== Severity: High Date : 2016-01-17 CVE-ID : CVE-2015-8770 Package : roundcubemail Type : remote code execution Remote : Yes Link : https://wiki.archlinux.org/index.php/CVE Summary ======= The package roundcubemail before version 1.2beta-2 is vulnerable to remote code execution. Resolution ========== Upgrade to 1.2beta-2. # pacman -Syu "roundcubemail>=1.2beta-2" The problem has been fixed upstream in version 1.0.8 and 1.1.4. Workaround ========== None. Description =========== High-Tech Bridge Security Research Lab discovered a path traversal vulnerability in Roundcube. Vulnerability can be exploited to gain access to sensitive information and under certain circumstances to execute arbitrary code and totally compromise the vulnerable server. The vulnerability exists due to insufficient sanitization of "_skin" HTTP POST parameter in "/index.php" script when changing between different skins of the web application. A remote authenticated attacker can use path traversal sequences (e.g. "../../") to load a new skin from arbitrary location on the system, readable by the webserver. Exploitation of the vulnerability requires valid user credentials and ability to create files on vulnerable host. Impact ====== A remote authenticated attacker can access sensitive information and may be able to execute arbitrary code on the affected host. References ========== https://bugs.archlinux.org/task/47764 https://www.htbridge.com/advisory/HTB23283 https://access.redhat.com/security/cve/CVE-2015-8770 https://roundcube.net/news/2015/12/26/updates-1.1.4-and-1.0.8-released/ https://github.com/roundcube/roundcubemail/commit/10e5192a2b1bc90ec137f5e69d...