CA BrightStor ARCserve Backup XDR Parsing Buffer Overflow Vulnerability

ID ZDI-08-026
Type zdi
Reporter Damian Put
Modified 2008-11-09T00:00:00


This vulnerability allws 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.