CVE-2018-0006

Summary

A high rate of VLAN authentication attempts sent from an adjacent host on the local broadcast domain can trigger high memory utilization by the BBE subscriber management daemon (bbe-smgd), and lead to a denial of service condition. The issue was caused by attempting to process an unbounded number of pending VLAN authentication requests, leading to excessive memory allocation. This issue only affects devices configured for DHCPv4/v6 over AE auto-sensed VLANs, utilized in Broadband Edge (BBE) deployments. Other configurations are unaffected by this issue. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R6-S2, 15.1R7; 16.1 versions prior to 16.1R5-S1, 16.1R6; 16.2 versions prior to 16.2R2-S2, 16.2R3; 17.1 versions prior to 17.1R2-S5, 17.1R3; 17.2 versions prior to 17.2R2.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS15.1 < 15.1R6-S2, 15.1R7affected
Juniper NetworksJunos OS16.1 < 16.1R5-S1, 16.1R6affected
Juniper NetworksJunos OS16.2 < 16.2R2-S2, 16.2R3affected
Juniper NetworksJunos OS17.1 < 17.1R2-S5, 17.1R3affected
Juniper NetworksJunos OS17.2 < 17.2R2affected

Weaknesses

  • Denial of service

Workarounds

Since this issue is specific to auto-sense or dynamic VLANs, utilizing a static VLAN model will mitigate this issue.

ADP Enrichment

CVE Program Container

Additional References

References