openMosix userspace library stack-based buffer overflow

2008.04.17
Risk: High
Local: No
Remote: Yes
CWE: CWE-119


CVSS Base Score: 1.9/10
Impact Subscore: 2.9/10
Exploitability Subscore: 3.4/10
Exploit range: Local
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

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.


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