CVE-2018-0056

Name of the Vulnerable Software and Affected Versions: Junos OS versions prior to 15.1R7-S1 on MX Series Junos OS versions prior to 16.1R4-S12 on MX Series Junos OS versions prior to 16.1R6-S6 on MX Series Junos OS versions prior to 16.2R2-S7 on MX Series Junos OS versions prior to 17.1R2-S9 on MX Series Junos OS versions prior to 17.2R1-S7 on MX Series Junos OS versions prior to 17.2R2-S6 on MX Series Junos OS versions prior to 17.3R2-S4 on MX Series Junos OS versions prior to 17.3R3-S1 on MX Series Junos OS versions prior to 17.4R1-S5 on MX Series Junos OS versions prior to 18.1R2 on MX Series

Description: The Layer 2 Address Learning Daemon (L2ALD) daemon may crash when attempting to delete a duplicate MAC address that is not found in the internal MAC address table. This issue occurs when a duplicate MAC address is learned by two different interfaces on an MX Series device with l2-backhaul VPN configured.

Recommendations: For Junos OS versions prior to 15.1R7-S1 on MX Series, update to 15.1R7-S1 or later. For Junos OS versions prior to 16.1R4-S12 on MX Series, update to 16.1R4-S12 or later. For Junos OS versions prior to 16.1R6-S6 on MX Series, update to 16.1R6-S6 or later. For Junos OS versions prior to 16.2R2-S7 on MX Series, update to 16.2R2-S7 or later. For Junos OS versions prior to 17.1R2-S9 on MX Series, update to 17.1R2-S9 or later. For Junos OS versions prior to 17.2R1-S7 on MX Series, update to 17.2R1-S7 or later. For Junos OS versions prior to 17.2R2-S6 on MX Series, update to 17.2R2-S6 or later. For Junos OS versions prior to 17.3R2-S4 on MX Series, update to 17.3R2-S4 or later. For Junos OS versions prior to 17.3R3-S1 on MX Series, update to 17.3R3-S1 or later. For Junos OS versions prior to 17.4R1-S5 on MX Series, update to 17.4R1-S5 or later. For Junos OS versions prior to 18.1R2 on MX Series, update to 18.1R2 or later.