Caldera X11 Library -xrm Buffer Overflow Vulnerability

OpenUnix is a derivative of UnixWare, both Unix Operating System derivatives distributed and maintained by Caldera.

Under some circumstances, it is possible to take advantage of a buffer overflow that may yield elevated privileges. Programs that have been linked against the vulnerable X11 library do not perform proper bounds checking when the -xrm flag is used. This could allow the overwriting of stack variables, including the return address, and code execution.


 

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