Junos OS: Kernel panic upon receipt of specific TCPv6 packet on management interface (Juniper Networks Junos OS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.65 % · percentile 51 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
- NVD status
- Modified
Description
A vulnerability in the forwarding of transit TCPv6 packets received on the Ethernet management interface of Juniper Networks Junos OS allows an attacker to trigger a kernel panic, leading to a Denial of Service (DoS). Continued receipt and processing of these transit packets will create a sustained Denial of Service (DoS) condition. This issue only occurs when TCPv6 packets are routed through the management interface. Other transit traffic, and traffic destined to the management interface, are unaffected by this vulnerability. This issue was introduced as part of a TCP Parallelization feature added in Junos OS 17.2, and affects systems with concurrent network stack enabled. This feature is enabled by default, but can be disabled (see WORKAROUND section below). This issue affects Juniper Networks Junos OS: 17.2 versions prior to 17.2R3-S4; 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R2-S2, 19.1R3; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 17.2R1.
Weaknesses (CWE)
- CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | juniper |
| CVSS 3.1 | MEDIUM 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · sirt@juniper.net (Secondary) |
| CVSS 2.0 | HIGH 7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-2877
- GCVE · GCVE-0-2021-0258
CERT-FR advisories
- CERTFR-2021-AVI-273 — Multiples vulnérabilités dans Junos OS · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:juniper:junos:17.2:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1-s5:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r1-s8:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r2-s11:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r2-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r2-s6:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r2-s7:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r3-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r3-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:17.2:r3-s3:*:*:*:*:*:*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:*:*:*:*:*:*- +116 more
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Junos OS | unaffected 17.2 < 17.2R1 ; affected 17.3 < 17.3R3-S9 ; affected 17.4 < 17.4R2-S11, 17.4R3-S2 ; affected 18.1 < 18.1R3-S11 ; affected 18.2 < 18.2R3-S5 ; affected 18.3 < 18.3R2-S4, 18.3R3-S3 |
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 |