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SOL-11.1-040340 - Consecutive login attempts for SSH must be limited to 3.

Information

Setting the authentication login limit to a low value will disconnect the attacker and force a reconnect, which severely limits the speed of such brute-force attacks.

Solution

The root role is required.

Modify the sshd_config file.

# pfedit /etc/ssh/sshd_config

Locate the lines containing:

MaxAuthTries
MaxAuthTriesLog

Change them to:

MaxAuthTries 6
MaxAuthTriesLog 6

Restart the SSH service.

# svcadm restart svc:/network/ssh

Note: Solaris SSH MaxAuthTries of 6 maps to 3 actual failed attempts.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SOL_11_x86_V3R4_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|III, CCI|CCI-000366, Rule-ID|SV-216115r1155803_rule, STIG-ID|SOL-11.1-040340, STIG-Legacy|SV-60971, STIG-Legacy|V-48099, Vuln-ID|V-216115

Plugin: Unix

Control ID: c6f7a0b057bb2cea774c6534ee09ab58c83bb8b25f6cd2f55373d9d4a61fb800