The remote host is missing an update to apr announced via advisory USN-813-1.

The problem can be corrected by upgrading your system to the following package versions: Ubuntu 8.04 LTS: libapr1 1.2.11-1ubuntu0.1 Ubuntu 8.10: libapr1 1.2.12-4ubuntu0.1 Ubuntu 9.04: libapr1 1.2.12-5ubuntu0.1 After a standard system upgrade you need to restart any applications using apr, such as Subversion and Apache, to effect the necessary changes. https://secure1.securityspace.com/smysecure/catid.html?in=USN-813-1

Matt Lewis discovered that apr did not properly sanitize its input when allocating memory. If an application using apr processed crafted input, a remote attacker could cause a denial of service or potentially execute arbitrary code as the user invoking the application.