CVE detail

CVE-2024-21612 — CVE-2024-21612

Published 2024-01-12 · Modified 2026-06-17 · Vendor juniper · Product junos_os_evolved · Source nvd
HIGH
severity
CVSS-derived band
7.5
CVSS v3
0–10 scale
0.0053
EPSS probability
exploitation probability, 30d
42.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog

Description

An Improper Handling of Syntactically Invalid Structure vulnerability in Object Flooding Protocol (OFP) service of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). On all Junos OS Evolved platforms, when specific TCP packets are received on an open OFP port, the OFP crashes leading to a restart of Routine Engine (RE). Continuous receipt of these specific TCP packets will lead to a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS Evolved * All versions earlier than 21.2R3-S7-EVO; * 21.3 versions earlier than 21.3R3-S5-EVO ; * 21.4 versions earlier than 21.4R3-S5-EVO; * 22.1 versions earlier than 22.1R3-S4-EVO; * 22.2 versions earlier than 22.2R3-S3-E

Remediation

vendor remediation guidance

The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 21.2R3-S7-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S3-EVO, 22.3R3-EVO, 22.4R2-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.

workarounds

In order to prevent this issue, following firewall filter needs to be added for each OFP port. [ firewall family inet filter mgmt-filter term discard_ofp from protocol tcp ] [ firewall family inet filter mgmt-filter term discard_ofp from destination-port <ofp_port_1> ] [ firewall family inet filter mgmt-filter term discard_ofp from destination-port <ofp_port_2> ] [ firewall family inet filter mgmt-filter term discard_ofp then discard ] [ firewall family inet filter mgmt-filter term 2 then accept ] [ interfaces re0:mgmt-0 unit 0 family inet filter input mgmt-filter ] [ interfaces re1:mgmt-0 unit 0 family inet filter input mgmt-filter ]

ProductVulnerable rangeFixed versionAdvisory
Juniper Networks Junos OS Evolved<21.2R3-S7-EVO21.2R3-S7-EVOadvisory ↗
Juniper Networks Junos OS Evolved>=21.3<21.3R3-S5-EVO 21.3R3-S5-EVO advisory ↗
Juniper Networks Junos OS Evolved>=21.4<21.4R3-S5-EVO21.4R3-S5-EVOadvisory ↗
Juniper Networks Junos OS Evolved>=22.1<22.1R3-S4-EVO22.1R3-S4-EVOadvisory ↗
Juniper Networks Junos OS Evolved>=22.2<22.2R3-S3-EVO 22.2R3-S3-EVO advisory ↗
Juniper Networks Junos OS Evolved>=22.3<22.3R3-EVO22.3R3-EVOadvisory ↗
Juniper Networks Junos OS Evolved>=22.4<22.4R2-EVO, 22.4R3-EVO22.4R2-EVO, 22.4R3-EVOadvisory ↗

References

cvedb.io · NVD · CISA KEV · FIRST EPSS · vendor advisories (CVE Program List v5). Informational only, no warranty — verify every remediation against the vendor advisory before acting on it. This product uses data from the NVD API but is not endorsed or certified by the NVD, CISA, FIRST.org or any vendor named. CVE® is a registered trademark of The MITRE Corporation.