HTTP: Chunked POST Request to nsiislog.dll
This signature detects chunked POST requests to NSIISLOG.DLL. Attackers can exploit Windows Media Services that have logging enabled by sending a specially crafted network request, which can result in a denial of service or the execution of arbitrary code.
Extended Description
Microsoft has reported a denial of service vulnerability in Windows Media Services. This is due to a problem with how the logging ISAPI extension handles incoming client requests. This could cause a denial of service in IIS, which is exploitable through Media Services. **The vendor has confirmed that this vulnerability could be exploited to execute arbitrary code.
Affected Products
Microsoft windows_nt_terminal_server
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Microsoft
7.5
5.0