OpenSSL’s ChangeCipherSpec processing has a serious vulnerability. This vulnerability allows malicious intermediate nodes to intercept encrypted data and decrypt them while forcing SSL clients to use weak keys which are exposed to the malicious nodes.
A. Affected Versions:
OpenSSL 1.0.1 through 1.0.1g
OpenSSL 1.0.0 through 1.0.0l
all versions before OpenSSL 0.9.8y
B. Not Affected Versions:
OpenSSL 1.0.1h
OpenSSL 1.0.0m
OpenSSL 0.9.8za
http://ccsinjection.lepidum.co.jp/