Some vulnerabilities have been reported in Cisco IOS, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerabilities are caused due to unspecified errors when processing SSL "ClientHello", "ChangeCipherSpec", and "Finished" messages. These can be exploited to cause a crash by sending specially crafted messages to a vulnerable device.
Successful exploitation requires that the Cisco IOS software is configured to use SSL.
Solution: Apply updated versions. See vendor advisory for more details.
Provided and/or discovered by: Reported by the vendor.
Original Advisory: cisco-sa-20070522-SSL:
Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this
information to firstname.lastname@example.org
Subject: Cisco IOS SSL Messages Denial of Service Vulnerabilities
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