Junos OS: Remote code execution vulnerability in overlayd service (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 2.57 % · percentile 85 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
Description
A buffer size validation vulnerability in the overlayd service of Juniper Networks Junos OS may allow an unauthenticated remote attacker to send specially crafted packets to the device, triggering a partial Denial of Service (DoS) condition, or leading to remote code execution (RCE). Continued receipt and processing of these packets will sustain the partial DoS. The overlayd daemon handles Overlay OAM packets, such as ping and traceroute, sent to the overlay. The service runs as root by default and listens for UDP connections on port 4789. This issue results from improper buffer size validation, which can lead to a buffer overflow. Unauthenticated attackers can send specially crafted packets to trigger this vulnerability, resulting in possible remote code execution. overlayd runs by default in MX Series, ACX Series, and QFX Series platforms. The SRX Series does not support VXLAN and is therefore not vulnerable to this issue. Other platforms are also vulnerable if a Virtual Extensible LAN (VXLAN) overlay network is configured. This issue affects Juniper Networks Junos OS: 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-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 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-S1; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S1.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | juniper |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · sirt@juniper.net (Secondary) |
| CVSS 2.0 | HIGH 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-2873
- GCVE · GCVE-0-2021-0254
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: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:*:*:*:*:*:*- +195 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-S4 ; affected 18.1 < 18.1R3-S12 ; affected 18.2 < 18.2R2-S8, 18.2R3-S7 ; affected 18.3 < 18.3R3-S4 |
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 |