Detections
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AIX7-00-002113 - The AIX SSH daemon must not allow compression.

Information

If compression is allowed in an SSH connection prior to authentication, vulnerabilities in the compression software could result in compromise of the system from an unauthenticated connection, potentially with root privileges.

Solution

Edit the "/etc/ssh/sshd_config" file and add (or modify) the following line:
Compression no

Restart the SSH daemon:
# stopsrc -s sshd
# startsrc -s sshd

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_IBM_AIX_7-x_V3R3_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-215296r991589_rule, STIG-ID|AIX7-00-002113, STIG-Legacy|SV-101803, STIG-Legacy|V-91705, Vuln-ID|V-215296

Plugin: Unix

Control ID: 1801a89a56bd25994ff0b3463055989655e72df432a6e814ceb53e187373fea9