Microsoft IE Vulnerability attacks spotted in the Wild
The CVE-2014-1815 vulnerability exploit is spotted in the wild. Following is the detailed analysis:
The attacker entices the user to visit the specially crafted webpage. If the user has an older un-patched version of Internet Explorer, the attacker is able to execute code in user's context and also crash IE.
The crash code looks like
The jscript is trying to access the freed marquee object. This leads to use after free condition which causes internet explorer to crash. The attacker is able to control the memory location EAX+70h
Data at memory address in ECX
Stack trace looks like
The attacker is able to download/execute suspicious file storm.swf under the user's security context.
Dell Sonicwall Threat research team has implement following signature to prevent this attack