CVE detail

CVE-2023-36834 — CVE-2023-36834

Published 2023-07-14 · Modified 2026-06-17 · Vendor juniper · Product junos · Source nvd
MEDIUM
severity
CVSS-derived band
6.5
CVSS v3
0–10 scale
0.0030
EPSS probability
exploitation probability, 30d
23.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog

Description

An Incomplete Internal State Distinction vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX 4600 and SRX 5000 Series allows an adjacent attacker to cause a Denial of Service (DoS). If an SRX is configured in L2 transparent mode the receipt of a specific genuine packet can cause a single Packet Processing Engines (PPE) component of the PFE to run into a loop, which in turn will render the PPE unavailable. Each packet will cause one PPE to get into a loop, leading to a gradual performance degradation until all PPEs are unavailable and all traffic processing stops. To recover the affected FPC need to be restarted. This issue affects Juniper Networks Junos OS on SRX 4600 and SRX 5000 Series: 20.1 version 20.1R1 and later versions; 20.2 versions prior to 2

Remediation

vendor remediation guidance

The following software releases have been updated to resolve this specific issue: Junos OS 20.2R3-S7, 20.4R3-S7, 21.1R3-S5, 21.2R3-S3, 21.3R3-S3, 21.4R3-S1, 22.1R3, 22.2R2, 22.3R1-S1, 22.3R2, 22.4R1, and all subsequent releases.

workarounds

There are no known workarounds for this issue.

ProductVulnerable rangeFixed versionAdvisory
Juniper Networks Junos OS>=20.1<20.1*20.1*advisory ↗
Juniper Networks Junos OS>=20.2<20.2R3-S720.2R3-S7advisory ↗
Juniper Networks Junos OS>=20.3<20.3*20.3*advisory ↗
Juniper Networks Junos OS>=20.4<20.4R3-S720.4R3-S7advisory ↗
Juniper Networks Junos OS>=21.1<21.1R3-S521.1R3-S5advisory ↗
Juniper Networks Junos OS>=21.2<21.2R3-S321.2R3-S3advisory ↗
Juniper Networks Junos OS>=21.3<21.3R3-S321.3R3-S3advisory ↗
Juniper Networks Junos OS>=21.4<21.4R3-S121.4R3-S1advisory ↗
Juniper Networks Junos OS>=22.1<22.1R322.1R3advisory ↗
Juniper Networks Junos OS>=22.2<22.2R222.2R2advisory ↗
Juniper Networks Junos OS>=22.3<22.3R1-S1, 22.3R222.3R1-S1, 22.3R2advisory ↗

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.