Junos OS: MX Series: An FPC crash is observed when CFM is enabled in a VPLS scenario and a specific LDP related command is run (Juniper Networks Junos OS)

CVE-2023-44193

MEDIUM 5.5

At a glance

Source: NVD
EPSS: EPSS 0.17 % · percentile 7 (2026-10-31)
State: PUBLISHED
Published: 2023-10-12 23:04 UTC
Updated: 2024-09-17 16:10 UTC
Assigner: juniper
NVD status: Modified

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Description

An Improper Release of Memory Before Removing Last Reference vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a local, low privileged attacker to cause an FPC crash, leading to Denial of Service (DoS). On all Junos MX Series with MPC1 - MPC9, LC480, LC2101, MX10003, and MX80, when Connectivity-Fault-Management (CFM) is enabled in a VPLS scenario, and a specific LDP related command is run, an FPC will crash and reboot. Continued execution of this specific LDP command can lead to sustained Denial of Service condition. This issue affects: Juniper Networks Junos OS on MX Series: * All versions prior to 20.4R3-S7; * 21.1 versions prior to 21.1R3-S5; * 21.2 versions prior to 21.2R3-S4; * 21.3 versions prior to 21.3R3-S4; * 21.4 versions prior to 21.4R3-S3; * 22.1 versions prior to 22.1R3-S1; * 22.2 versions prior to 22.2R2-S1, 22.2R3; * 22.3 versions prior to 22.3R1-S2, 22.3R2.

Weaknesses (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

https://supportportal.juniper.net/JSA73157

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	juniper
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	NVD · sirt@juniper.net (Secondary)
CVSS 3.1	MEDIUM 5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)

European references

ENISA EUVD · EUVD-2023-48552
GCVE · GCVE-0-2023-44193

CERT-FR advisories

CERTFR-2023-AVI-0836 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* < 20.4
cpe:2.3:o:juniper:junos:20.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r3-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:20.4:r3-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.1:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.3:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.3:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.3:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.3:r1-s2:*:*:*:*:*:*
+30 more

Affected products

Product	Versions
Juniper Networks · Junos OS	affected 0 < 20.4R3-S7 ; affected 21.1 < 21.1R3-S5 ; affected 21.2 < 21.2R3-S4 ; affected 21.3 < 21.3R3-S4 ; affected 21.4 < 21.4R3-S3 ; affected 22.1 < 22.1R3-S1

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: An FPC crash is observed when CFM is enabled in a VPLS scenario and a specific LDP related command is run (Juniper Networks Junos OS)