Junos OS: MX Series and SRX Series: The flow processing daemon (flowd) will crash when specific H.323 packets are received (Juniper Networks Junos OS)

CVE-2023-22415

HIGH 7.5

At a glance

Source: NVD
EPSS: EPSS 0.79 % · percentile 56 (2026-10-31)
State: PUBLISHED
Published: 2023-01-12 00:00 UTC
Updated: 2025-04-07 19:54 UTC
Assigner: juniper
NVD status: Modified

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Description

An Out-of-Bounds Write vulnerability in the H.323 ALG of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On all MX Series and SRX Series platform, when H.323 ALG is enabled and specific H.323 packets are received simultaneously, a flow processing daemon (flowd) crash will occur. Continued receipt of these specific packets will cause a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on MX Series and SRX Series All versions prior to 19.4R3-S10; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2.

Weaknesses (CWE)

CWE-787 — Out-of-bounds Write

References

https://kb.juniper.net/JSA70211

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	juniper
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · sirt@juniper.net (Secondary)

European references

ENISA EUVD · EUVD-2023-26578
GCVE · GCVE-0-2023-22415

CERT-FR advisories

CERTFR-2023-AVI-0051 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* < 19.4
cpe:2.3:o:juniper:junos:19.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r1-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r1-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r2-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r2-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.4:r3-s9:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.2:r3-s5:*:*:*:*:*:*
+65 more

Affected products

Product	Versions
Juniper Networks · Junos OS	affected unspecified < 19.4R3-S10 ; affected 20.2 < 20.2R3-S6 ; affected 20.3 < 20.3R3-S6 ; affected 20.4 < 20.4R3-S5 ; affected 21.1 < 21.1R3-S4 ; affected 21.2 < 21.2R3-S3

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

⚠️ Junos OS: MX Series and SRX Series: The flow processing daemon (flowd) will crash when specific H.323 packets are received (Juniper Networks Junos OS)