![]() ![]() Access conditionsĬredentials disclosure, authentication bypass Proof of ConceptĮxceed-downgrade.py script can be used to test for and exploit that vulnerability. We did not try to use Kerberos-based authentication protocol, but the attack against that will most likely be identical (instead of credentials the Kerberos ticket will be sent in the clear). In standard connection, the same packet is sent within SSL stream. =.hijacĠ0000024 6b 65 64 0a 30 35 31 45 31 45 31 41 32 36 00 01 ked.051E 1E1A26.Įxemplary bytes sent right after the 8-bytes handshake contain user login and obfuscated password. This triggers SSL handshake (similar to STARTSSL mechanism), credentials are then sent in encrypted SSLv3 connection: ![]() Response from current CM version is : \x0b\x00\x00\x00. Upon connecting to Cluster Manager (TCP port 5500), EoD Client sends 4 bytes: \x01\x01\x00\x00, in turn CM responds with 4 bytes, negotiating the version of the protocol to use. by using ARP poisoning/DNS hijacking/rogue access point), EoD Client can be forced to using older authentication protocol, sending out credentials in the clear. If communication between EoD Client and Cluster Manager can be intercepted and tampered with (e.g. - Query about issue resolution
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