Bug 1298864 (CVE-2015-8770)

Summary: CVE-2015-8770 roundcube: remote code execution
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: christoph.wickert, fedora, gwync, mhlavink
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: roundcubemail 1.1.4 Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2017-03-14 15:29:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1298865    
Bug Blocks:    

Description Andrej Nemec 2016-01-15 09:43:58 UTC 
High-Tech Bridge Security Research Lab discovered a path traversal vulnerability in a popular webmail client 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. 

Original report with reproducer:

http://seclists.org/bugtraq/2016/Jan/60
Comment 1 Andrej Nemec 2016-01-15 09:44:22 UTC 
Created roundcubemail tracking bugs for this issue:

Affects: epel-all [bug 1298865]