Short Name |
HTTP:IIS:HEADER-HOST-DOS |
---|---|
Severity |
Major |
Recommended |
No |
Recommended Action |
Drop |
Category |
HTTP |
Keywords |
IIS Host Header DoS |
Release Date |
2003/04/22 |
Update Number |
1213 |
Supported Platforms |
di-5.3+, idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
This signature detects attempts to exploit a known vulnerability against Microsoft IIS. Attackers can pass maliciously malformed header values to the host to crash the IIS service.
Microsoft IIS is reported to be prone to a remotely exploitable denial of service. This condition occurs upon receipt of a malformed HOST field in a HTTP request for 'shtml.dll'. It is possible to reproduce this condition by sending a HTTP POST request with a HOST header field that is composed of an excessive number of slashes (/). Further details are not known at this time.