An Authentication Bypass Using an Alternate Path or Channel vulnerability in Juniper Networks Session Smart Router or conductor running with a redundant peer allows a network based attacker to bypass authentication and take full control of the device. Only routers or conductors that are running in high-availability redundant configurations are affected by this vulnerability. No other Juniper Networks products or platforms are affected by this issue. This issue affects: Session Smart Router:  * All versions before 5.6.15,  * from 6.0 before 6.1.9-lts,  * from 6.2 before 6.2.5-sts. Session Smart Conductor:  * All versions before 5.6.15,  * from 6.0 before 6.1.9-lts,  * from 6.2 before 6.2.5-sts.  WAN Assurance Router:  * 6.0 versions before 6.1.9-lts,  * 6.2 versions before 6.2.5-sts.

The usage of an internal HTTP header created an authentication bypass vulnerability (CWE-287), allowing an attacker to view internal files, change settings, manipulate services and execute arbitrary code. This issue affects all Juniper Networks 128 Technology Session Smart Router versions prior to 4.5.11, and all versions of 5.0 up to and including 5.0.1.