Junos OS: A specific BGP VPNv6 flowspec message causes routing protocol daemon (rpd) process to crash with a core. (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.85 % · percentile 58 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
Description
Due to an improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved the Routing Protocol Daemon (RPD) service, upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration, crashes and restarts causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec deployments. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 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, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: All versions after 18.4R1-EVO prior to 20.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved versions prior to 18.4R1-EVO.
Weaknesses (CWE)
- CWE-754 — Improper Check for Unusual or Exceptional Conditions
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | juniper |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · sirt@juniper.net (Secondary) |
| CVSS 2.0 | MEDIUM 6.8 | AV:N/AC:L/Au:S/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-2855
- GCVE · GCVE-0-2021-0236
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:18.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r1-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r2-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:18.4:r3-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.1:r3-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:*- +42 more
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | unaffected unspecified < 18.4R1 ; affected 18.4 < 18.4R1-S8, 18.4R2-S7, 18.4R3-S7 ; affected 19.1 < 19.1R2-S2, 19.1R3-S4 ; affected 19.2 < 19.2R1-S6, 19.2R3-S2 ; affected 19.3 < 19.3R3-S2 ; affected 19.4 < 19.4R2-S4, 19.4R3-S1 |
| Juniper Networks · Junos OS Evolved | unaffected unspecified < 18.4R1-EVO ; affected 20.3-EVO < 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 |