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Junos OpenSSH Restriction Bypass Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Junos OS is prone to a restriction bypass vulnerability in OpenSSH.
Insight
Insight
A vulnerability in OpenSSH may allow a remote network based attacker to effectively bypass restrictions on number of authentication attempts, as defined by MaxAuthTries settings on Junos.
Affected Software
Affected Software
Junos OS 12.1, 12.3, 13.2, 13.3, 14.1, 14.2 and 15.1
Detection Method
Detection Method
Checks if a vulnerable OS build is present on the target host.
Solution
Solution
New builds of Junos OS software are available from Juniper. As a workaround disable password based authentication completely, and implement key based authentication exclusively in the SSH server configuration.