Junos OS: Receipt of a crafted DHCP packet will cause the jdhcpd DHCP service to core. (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.47 % · percentile 40 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
Description
An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD's DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
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 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| 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-2021-2886
- GCVE · GCVE-0-2021-0267
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:19.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | affected 19.4 < 19.4R3-S1 ; affected 20.1 < 20.1R2-S1, 20.1R3 ; affected 20.2 < 20.2R3 ; affected 20.3 < 20.3R2 |
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 |