A local overflow exists in IBM AIX. The pioout command fails to validate input resulting in a possible buffer overflow. With a specially crafted request, an attacker can cause arbitrary command execution resulting in a loss of integrity.
Upgrade to version 4.3.3 (APAR IY28880), 5.1.0 (APAR IY29677) or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.