CVE detail

CVE-2023-36838 — CVE-2023-36838

Published 2023-07-14 · Modified 2026-06-17 · Vendor juniper · Product junos · Source nvd
MEDIUM
severity
CVSS-derived band
5.5
CVSS v3
0–10 scale
0.0018
EPSS probability
exploitation probability, 30d
8.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog

Description

An Out-of-bounds Read vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a local, authenticated attacker with low privileges, to cause a Denial of Service (DoS). If a low privileged user executes a specific CLI command, flowd which is responsible for traffic forwarding in SRX crashes and generates a core dump. This will cause temporary traffic interruption until the flowd process is restarted automatically. Continued execution of this command will lead to a sustained DoS. This issue affects Juniper Networks Junos OS on SRX Series: All versions prior to 20.2R3-S7; 20.3 version 20.3R1 and later versions; 20.4 versions prior to 20.4R3-S6; 21.1 versions prior to 21.1R3-S5; 21.2 versions prior to 21.2R3-S4; 21.3 versions prior to 21.3R3-S4; 2

Remediation

vendor remediation guidance

The following software releases have been updated to resolve this specific issue: Junos OS 20.2R3-S7, 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S4, 21.4R3-S3, 22.1R3-S1, 22.2R3, 22.3R2, 22.4R1-S1, 22.4R2, 23.1R1, and all subsequent releases.

workarounds

There are no available workarounds for this issue.

ProductVulnerable rangeFixed versionAdvisory
Juniper Networks Junos OS>=unspecified<20.2R3-S720.2R3-S7advisory ↗
Juniper Networks Junos OS>=20.3<20.3*20.3*advisory ↗
Juniper Networks Junos OS>=20.4<20.4R3-S620.4R3-S6advisory ↗
Juniper Networks Junos OS>=21.1<21.1R3-S521.1R3-S5advisory ↗
Juniper Networks Junos OS>=21.2<21.2R3-S421.2R3-S4advisory ↗
Juniper Networks Junos OS>=21.3<21.3R3-S421.3R3-S4advisory ↗
Juniper Networks Junos OS>=21.4<21.4R3-S321.4R3-S3advisory ↗
Juniper Networks Junos OS>=22.1<22.1R3-S122.1R3-S1advisory ↗
Juniper Networks Junos OS>=22.2<22.2R322.2R3advisory ↗
Juniper Networks Junos OS>=22.3<22.3R222.3R2advisory ↗
Juniper Networks Junos OS>=22.4<22.4R1-S1, 22.4R222.4R1-S1, 22.4R2advisory ↗

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.