Junos OS: bbe-smgd process denial of service while processing VLAN authentication requests/rejects (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.67 % · percentile 52 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-770 — Allocation of Resources Without Limits or Throttling
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 6.5 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | juniper |
| CVSS 3.0 | MEDIUM 6.5 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · sirt@juniper.net (Secondary) |
| CVSS 3.0 | MEDIUM 5.3 | CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 2.9 | AV:A/AC:M/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2018-0831
- GCVE · GCVE-0-2018-0006
CERT-FR advisories
- CERTFR-2018-AVI-026 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:juniper:junos:15.1:*:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:16.1:*:*:*:*:*:*:*cpe:2.3:o:juniper:junos:16.1:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:16.1:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:16.1:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:16.1:r4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:16.1:r6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:16.2:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:16.2:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.1:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.1:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | affected 15.1 < 15.1R6-S2, 15.1R7 ; affected 16.1 < 16.1R5-S1, 16.1R6 ; affected 16.2 < 16.2R2-S2, 16.2R3 ; affected 17.1 < 17.1R2-S5, 17.1R3 ; affected 17.2 < 17.2R2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |