Junos OS: QFX5000 Series and EX4600 Series: Continuous traffic destined to a device configured with MC-LAG leading to nodes losing their control connection which can impact traffic (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.96 % · percentile 62 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
Description
An uncontrolled resource consumption vulnerability in Juniper Networks Junos OS on QFX5000 Series and EX4600 Series switches allows an attacker sending large amounts of legitimate traffic destined to the device to cause Interchassis Control Protocol (ICCP) interruptions, leading to an unstable control connection between the Multi-Chassis Link Aggregation Group (MC-LAG) nodes which can in turn lead to traffic loss. Continued receipt of this amount of traffic will create a sustained Denial of Service (DoS) condition. An indication that the system could be impacted by this issue is the following log message: "DDOS_PROTOCOL_VIOLATION_SET: Warning: Host-bound traffic for protocol/exception LOCALNH:aggregate exceeded its allowed bandwidth at fpc <fpc number> for <n> times, started at <timestamp>" This issue affects Juniper Networks Junos OS on QFX5000 Series and EX4600 Series: 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S8, 18.4R3-S7; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2; 20.4 versions prior to 20.4R1-S1, 20.4R2.
Weaknesses (CWE)
- CWE-770 — Allocation of Resources Without Limits or Throttling
- CWE-400 — Uncontrolled Resource Consumption
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | juniper |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · sirt@juniper.net (Secondary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-2904
- GCVE · GCVE-0-2021-0285
CERT-FR advisories
- CERTFR-2021-AVI-526 — Multiples vulnérabilités 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:a1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f5-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s10:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s12:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f6-s9:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:f7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r:*:*:*:*:*:*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:r4-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r4-s8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r4-s9:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r5-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r5-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r5-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r5-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:15.1:r6:*:*:*:*:*:*- +170 more
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | affected 15.1 < 15.1R7-S9 ; affected 17.3 < 17.3R3-S11 ; affected 17.4 < 17.4R2-S13, 17.4R3-S5 ; affected 18.3 < 18.3R3-S5 ; affected 18.4 < 18.4R2-S8, 18.4R3-S7 ; affected 19.1 < 19.1R3-S5 |
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 |