CVE-2018-0056

Summary

If a duplicate MAC address is learned by two different interfaces on an MX Series device, the MAC address learning function correctly flaps between the interfaces. However, the Layer 2 Address Learning Daemon (L2ALD) daemon might crash when attempting to delete the duplicate MAC address when the particular entry is not found in the internal MAC address table. This issue only occurs on MX Series devices with l2-backhaul VPN configured. No other products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S1 on MX Series; 16.1 versions prior to 16.1R4-S12, 16.1R6-S6 on MX Series; 16.2 versions prior to 16.2R2-S7 on MX Series; 17.1 versions prior to 17.1R2-S9 on MX Series; 17.2 versions prior to 17.2R1-S7, 17.2R2-S6 on MX Series; 17.3 versions prior to 17.3R2-S4, 17.3R3-S1 on MX Series; 17.4 versions prior to 17.4R1-S5 on MX Series; 18.1 versions prior to 18.1R2 on MX Series.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS15.1 < 15.1R7-S1affected
Juniper NetworksJunos OS16.1 < 16.1R4-S12, 16.1R6-S6affected
Juniper NetworksJunos OS16.2 < 16.2R2-S7affected
Juniper NetworksJunos OS17.1 < 17.1R2-S9affected
Juniper NetworksJunos OS17.2 < 17.2R1-S7, 17.2R2-S6affected
Juniper NetworksJunos OS17.3 < 17.3R2-S4, 17.3R3-S1affected
Juniper NetworksJunos OS17.4 < 17.4R1-S5affected
Juniper NetworksJunos OS18.1 < 18.1R2affected

Weaknesses

  • Denial of service

Workarounds

There are no viable workarounds for this issue

ADP Enrichment

CVE Program Container

Additional References

References