It was discovered that the Base64 encoding functions in evolution-data-server did not properly handle large strings. If a user were tricked into opening a specially crafted image file, or tricked into connecting to a malicious server, an attacker could possibly execute arbitrary code with user privileges.
The problem can be corrected by updating your system to the following package versions:
16 March 2009
A security issue affects these releases of Ubuntu and its derivatives:
It was discovered that the Base64 encoding functions in evolution-data-server did not properly handle large strings. If a user were tricked into opening a specially crafted image file, or tricked into connecting to a malicious server, an attacker could possibly execute arbitrary code with user privileges.
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 upgrade you need to restart Evolution to effect the necessary changes.
Vulmon