Mono could be made to expose sensitive information over the network.
It was discovered that the Mono System.Web library incorrectly filtered certain error messages related to forbidden files. If a user were tricked into opening a specially crafted URL, an attacker could possibly exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2012-3382)
25 July 2012
A security issue affects these releases of Ubuntu and its derivatives:
Mono could be made to expose sensitive information over the network.
It was discovered that the Mono System.Web library incorrectly filtered certain error messages related to forbidden files. If a user were tricked into opening a specially crafted URL, an attacker could possibly exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2012-3382)
It was discovered that the Mono System.Web library incorrectly handled the EnableViewStateMac property. If a user were tricked into opening a specially crafted URL, an attacker could possibly exploit this to conduct cross-site scripting (XSS) attacks. This issue only affected Ubuntu 10.04 LTS. (CVE-2010-4159)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Mono applications to make all the necessary changes.
Vulmon