A vulnerability allows attackers to execute arbitrary code on vulnerable installations of CA BrightStor ARCserve Backup for Linux. User interaction is not required to exploit this vulnerability. The specific flaw exists due to improper bounds checking in the xdr_rwsstring() library function. By sending a long parameter into a daemon using this function to process strings, a stack based buffer overflow occurs, leading to execution of arbitrary code.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/66519/ZDI-08-026.txt
Source: https://packetstormsecurity.com/files/66519/Zero-Day-Initiative-Advisory-08-026.html