CA ARCserve Backup contains multiple vulnerabilities in the message engine that can allow a remote attacker to cause a denial of service. CA has issued an update to address the vulnerabilities. The vulnerabilities occur due to insufficient verification of data sent to the message engine. An attacker can make requests that can cause the message engine to crash.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/78438/CA20090615-01.txt
Source: https://packetstormsecurity.com/files/78438/CA-ARCserver-Backup-Message-Engine-Denial-Of-Service.html