Junos OS and Junos OS Evolved: In an EVPN-MPLS scenario churn of ESI routes causes a memory leak in l2ald (Juniper Networks Junos OS)
En bref
- Source
- NVD
- EPSS
- EPSS 0.17 % · centile 7 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- juniper
- Statut NVD
- Analyzed
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Description
A Missing Release of Memory after Effective Lifetime vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a memory leak ultimately leading to a Denial of Service (DoS). In an EVPN-MPLS scenario, routes learned from remote multi-homed Provider Edge (PE) devices are programmed as ESI routes. Due to a logic issue in the l2ald memory management, memory allocated for these routes is not released when there is churn for these routes. As a result, memory leaks in the l2ald process which will ultimately lead to a crash and restart of l2ald. Use the following command to monitor the memory consumption by l2ald: user@device> show system process extensive | match "PID|l2ald" This issue affects: Junos OS: * all versions before 22.4R3-S5, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2; Junos OS Evolved: * all versions before 22.4R3-S5-EVO, * 23.2 versions before 23.2R2-S3-EVO, * 23.4 versions before 23.4R2-S4-EVO, * 24.2 versions before 24.2R2-EVO.
Faiblesses (CWE)
- CWE-401 — Mémoire non libérée après sa durée de vie utile
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| 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 | juniper |
| CVSS 4.0 | HIGH 7.1 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/RE:M | juniper |
| CVSS 4.0 | HIGH 7.1 | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X | 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 · sirt@juniper.net (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-21090
- GCVE · GCVE-0-2026-33780
Avis du CERT-FR
- CERTFR-2026-AVI-0408 — Multiples vulnérabilités dans les produits Juniper Networks · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*< 22.4cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r3-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r3-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r3-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:22.4:r3-s4:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*< 22.4cpe:2.3:o:juniper:junos_os_evolved:22.4:-:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:22.4:r1:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:22.4:r1-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:22.4:r1-s2:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:22.4:r2:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:22.4:r2-s1:*:*:*:*:*:*cpe:2.3:o:juniper:junos_os_evolved:22.4:r2-s2:*:*:*:*:*:*- +23 autres
Produits affectés
| Produit | Versions |
|---|---|
| Juniper Networks · Junos OS | affected 0 < 22.4R3-S5 ; affected 23.2 < 23.2R2-S3 ; affected 23.4 < 23.4R2-S4 ; affected 24.2 < 24.2R2 |
| Juniper Networks · Junos OS Evolved | affected all version prior to < 22.4R3-S5-EVO ; affected 23.2 < 23.2R2-S3-EVO ; affected 23.4 < 23.4R2-S4-EVO ; affected 24.2 < 24.2R2-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 |