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Juniper Junos OS: bbe-smgd process denial of service while processing VLAN authentication requests/rejects (JSA10834) (CVE-2018-0006)

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Juniper Junos OS: bbe-smgd process denial of service while processing VLAN authentication requests/rejects (JSA10834) (CVE-2018-0006)

Severity
3
CVSS
(AV:A/AC:M/Au:N/C:N/I:N/A:P)
Published
01/10/2018
Created
07/25/2018
Added
01/11/2018
Modified
03/21/2022

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.

Solution(s)

  • juniper-junos-os-upgrade-latest

References

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