CVE-2018-0006

Junos OS: bbe-smgd process denial of service while processing VLAN authentication requests/rejects

State: Published
Severity: 6.5 Medium
Published: Jan 10, 2018
Updated: Sep 17, 2024
Reserved: Nov 16, 2017

Description

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.

Scores

CVSS	Score	Vector	Source
3.0	6.5 Medium	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	juniper

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
Junos OSJuniper Networks	15.1 to before 15.1R6-S2, 15.1R7Affected 16.1 to before 16.1R5-S1, 16.1R6Affected 16.2 to before 16.2R2-S2, 16.2R3Affected 17.1 to before 17.1R2-S5, 17.1R3Affected 17.2 to before 17.2R2Affected

References

1040184vdb-entry
https://kb.juniper.net/JSA10834

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