Terminal 1.3 in Apple Mac OS X 10.2 allows remote attackers to execute arbitrary commands via shell metacharacters in a telnet:// link, which is executed by Terminal.app window.
Improper Neutralization of Special Elements used in an OS Command The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.