A local overflow exists in IBM AIX. The uucp command fails to validate input file string parameters (-s parameter) resulting in a buffer overflow. With a specially crafted request longer than BUFSIZ, an attacker can cause segmentation faults resulting in a loss of integrity.
Upgrade to version 4.3.3 (APAR IY29519), 5.1.0 (APAR IY28158) or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.