A flaw was found in OpenSSH. When compression is negotiated, channels on the same connection share one LZ77 dictionary. A peer who can write on one channel can recover plaintext from another channel by chosen-plaintext lengths.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
red hat:red hat hardened images
red hat:red hat openshift container platform 4
red hat:red hat enterprise linux 7
red hat:red hat enterprise linux 6
red hat:red hat enterprise linux 8
red hat:red hat enterprise linux 9
red hat:red hat enterprise linux 10