Title: Veridis OpenKeyServer Cross Site Scripting Vulnerability
Severity: HIGH
Description:
Veridis OpenKeyServer is a public key repository for PGP based encryption. It supports a web interface for clients and synchronization with other key servers. It is available for Linux, FreeBSD, Solaris and Mac OS X.
A vulnerablity has been reported in the web interface used by OpenKeyServer. Certain pages are constructed which include user supplied data, opening a cross site scripting vulnerability. It has been demonstrated that this can be used to insert an IFRAME object referencing an arbitrary external site. It may also be possible to insert malicious script code.
Cross site scripting attacks generally open the possibility to subvert the information and interface provided by the vulnerable service. The nature of OpenKeyServer suggests that the data provided is extremely sensitive. Exploitation of this vulnerability may allow an attacker to attempt a man-in-the-middle attack against encrypted communication, through substitution of public key data.
Affected Products:
- Veridis OpenKeyServer 1.2.0
References:
- Beyond Security Ltd.: Keyservers Cross Site Scripting (When CSS Gets Dangerous)
- Veridis: OpenKeyServer Homepage
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