Advisory Text :  


title: openMosix userspace library stack-based buffer overflow

Discovered by: Jose Carlos Norte

There are a lot of buffer overflows present in the library of the
openMosix project, documented at:

http://www.openmosixview.com/docs/openMosixAPI.html

The vulnerable code is in:

http://openmosix.cvs.sourceforge.net/openmosix/userspace-tools/moslib/li

bmosix.c?revision=1.6&view=markup

134 int64_t

135 msx_readnode(int node, const char *item)

136 {

137 char fn[40];

138 int64_t val;

139

140 if(!node && !(node = msx_read("/proc/hpc/admin/mospe")))

141 return(-1);

142 sprintf(fn, "/proc/hpc/nodes/%d/%s", node, item);

in line 142 there is no check against overflow in "item" argument.

Every applications using this library, can be vulnerable to attacks
exploiting this flaw.