CVE detail

CVE-2023-44191 — CVE-2023-44191

Published 2023-10-13 · Modified 2026-06-17 · Vendor juniper · Product junos · Source nvd
HIGH
severity
CVSS-derived band
7.5
CVSS v3
0–10 scale
0.0052
EPSS probability
exploitation probability, 30d
41.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog

Description

An Allocation of Resources Without Limits or Throttling vulnerability in Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On all Junos OS QFX5000 Series and EX4000 Series platforms, when a high number of VLANs are configured, a specific DHCP packet will cause PFE hogging which will lead to dropping of socket connections. This issue affects: Juniper Networks Junos OS on QFX5000 Series and EX4000 Series * 21.1 versions prior to 21.1R3-S5; * 21.2 versions prior to 21.2R3-S5; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S4; * 22.1 versions prior to 22.1R3-S3; * 22.2 versions prior to 22.2R3-S1; * 22.3 versions prior to 22.3R2-S2, 22.3R3; * 22.4 versions prior to 22.4R2. This i

Remediation

vendor remediation guidance

The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S5, 21.3R3-S5, 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.2R1, and all subsequent releases.

workarounds

There are no known workarounds for this issue.

ProductVulnerable rangeFixed versionAdvisory
Juniper Networks Junos OS>=21.1<21.1R3-S521.1R3-S5advisory ↗
Juniper Networks Junos OS>=21.2<21.2R3-S521.2R3-S5advisory ↗
Juniper Networks Junos OS>=21.3<21.3R3-S521.3R3-S5advisory ↗
Juniper Networks Junos OS>=21.4<21.4R3-S421.4R3-S4advisory ↗
Juniper Networks Junos OS>=22.1<22.1R3-S322.1R3-S3advisory ↗
Juniper Networks Junos OS>=22.2<22.2R3-S122.2R3-S1advisory ↗
Juniper Networks Junos OS>=22.3<22.3R2-S2, 22.3R322.3R2-S2, 22.3R3advisory ↗
Juniper Networks Junos OS>=22.4<22.4R222.4R2advisory ↗

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.