Buffer overflow in internal string handling routines of xinetd before 2.1.8.8 allows remote attackers to execute arbitrary commands via a length argument of zero or less, which disables the length check.

Multiple vulnerabilities in xinetd 2.3.0 and earlier, and additional variants until 2.3.3, may allow remote attackers to cause a denial of service or execute arbitrary code, primarily via buffer overflows or improper NULL termination.

xinetd 2.1.8 and earlier runs with a default umask of 0, which could allow local users to read or modify files that are created by an application that runs under xinetd but does not set its own safe umask.