IBM Datapower XS40 Denial of Service

2009-01-15 / 2009-01-16
Credit: erik
Risk: High
Local: No
Remote: Yes
CWE: CWE-20


CVSS Base Score: 7.8/10
Impact Subscore: 6.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Complete

It appears it is possible to crash the IBM DataPower XS40 Security Gateway device by sending a simple (random?) string to it, over an established SSL-connection. The device reboots as a response to the input. Tested vulnerable firmware is 3.6.1.5 Issue fixed as tested in 3.6.1.12 Tested as follows (entered attack-string is abc in this case): openssl s_client -connect [IP]:[port] Loading 'screen' into random state - done CONNECTED(0000078C) .. --- abc [enter][enter] read:errno=0 After this, the device crashes and reboots

References:

http://www.securityfocus.com/bid/33169
http://www.securityfocus.com/archive/1/archive/1/499870/100/0/threaded


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