Junos OS and Junos OS Evolved: QFX5K Series: Underlay network traffic might not be processed upon receipt of high rate of specific genuine overlay packets in VXLAN scenario (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.38 % · percentile 32 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
Description
Due to a vulnerability in DDoS protection in Juniper Networks Junos OS and Junos OS Evolved on QFX5K Series switches in a VXLAN configuration, instability might be experienced in the underlay network as a consequence of exceeding the default ddos-protection aggregate threshold. If an attacker on a client device on the overlay network sends a high volume of specific, legitimate traffic in the overlay network, due to an improperly detected DDoS violation, the leaf might not process certain L2 traffic, sent by spines in the underlay network. Continued receipt and processing of the high volume traffic will sustain the Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on QFX5K Series: 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R2-S8, 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S6; 19.1 versions prior to 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R1-S2, 20.3R2. Juniper Networks Junos OS Evolved on QFX5220: All versions prior to 20.3R2-EVO.
Weaknesses (CWE)
- CWE-755 — Improper Handling of Exceptional Conditions
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | juniper |
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · sirt@juniper.net (Secondary) |
| CVSS 2.0 | LOW 3.3 | AV:A/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-2878
- GCVE · GCVE-0-2021-0259
CERT-FR advisories
- CERTFR-2021-AVI-290 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:juniper:junos:17.3:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r1-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r2-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3:-:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s10:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.3:r3-s9:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r1-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r1-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r1-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r1-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2-s10:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2-s11:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.4:r2-s6:*:*:*:*:*:*- +156 more
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | affected 17.3 < 17.3R3-S11 ; affected 17.4 < 17.4R3-S5 ; affected 18.1 < 18.1R3-S13 ; affected 18.2 < 18.2R2-S8, 18.2R3-S8 ; affected 18.3 < 18.3R3-S5 ; affected 18.4 < 18.4R1-S8, 18.4R2-S6, 18.4R3-S6 |
| Juniper Networks · Junos OS Evolved | affected unspecified < 20.3R2-EVO |
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 |