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TI-2024-14322 Aliases CVE-2024-21595GHSA-38gm-m6ww-x846

Junos OS: EX4100, EX4400, EX4600, QFX5000 Series: A high rate of specific ICMP traffic will cause the PFE to hang

Priority MEDIUM 40CWE-1286Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). If an attacker sends high rate of specific ICMP traffic to a device with VXLAN configured, this causes a deadlock of the PFE and results in the device becoming unresponsive. A manual restart will be required to recover the device. This issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices. This issue affects: Juniper Networks Junos OS * 21.4R3 versions earlier than 21.4R3-S4; * 22.1R3 versions earlier than 22.1R3-S3; * 22.2R2 versions earlier than 22.2R3-S1; * 22.3 versions earlier than 22.3R2-S2, 22.3R3; * 22.4 versions earlier than 22.4R2; * 23.1 versions earlier than 23.1R2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00538 45th percentileScored 2026-11-07
Fix Fixed Junos OS (Juniper Networks): 21.4R3-S4, 22.1R3-S3, 22.2R3-S1 +4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJunos OS21.4R3 to before 21.4R3-S4; 22.1R3 to before 22.1R3-S3; 22.2R2 to before 22.2R3-S1; 22.3 to before 22.3R2-S2, 22.3R3; 22.4 to before 22.4R2; 23.1 to before 23.1R221.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.1R2Patch availableCNA
  • Junos OS VendorJuniper Affected 21.4R3 to before 21.4R3-S4; 22.1R3 to before 22.1R3-S3; 22.2R2 to before 22.2R3-S1; 22.3 to before 22.3R2-S2, 22.3R3; 22.4 to before 22.4R2; 23.1 to before 23.1R2 Fixed in 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.1R2 Patch available CNA

CPE configurations NVD · 37

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:21.4:r3:*:*:*:*:*:*21.4 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3-s1:*:*:*:*:*:*21.4 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3-s2:*:*:*:*:*:*21.4 r3-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3-s3:*:*:*:*:*:*21.4 r3-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r3:*:*:*:*:*:*22.1 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r3-s1:*:*:*:*:*:*22.1 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r3-s2:*:*:*:*:*:*22.1 r3-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:*22.2 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r2-s1:*:*:*:*:*:*22.2 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:*22.2 r2-s2VulnerableJuniper
  • cpe:2.3:o:juniper:junos:21.4:r3:*:*:*:*:*:* Versions 21.4 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3-s1:*:*:*:*:*:* Versions 21.4 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3-s2:*:*:*:*:*:* Versions 21.4 r3-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3-s3:*:*:*:*:*:* Versions 21.4 r3-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r3:*:*:*:*:*:* Versions 22.1 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r3-s1:*:*:*:*:*:* Versions 22.1 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r3-s2:*:*:*:*:*:* Versions 22.1 r3-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:* Versions 22.2 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r2-s1:*:*:*:*:*:* Versions 22.2 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:* Versions 22.2 r2-s2 Vulnerable ·Juniper
Show 27 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:22.2:r3:*:*:*:*:*:*22.2 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:-:*:*:*:*:*:*22.3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r1:*:*:*:*:*:*22.3 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r1-s1:*:*:*:*:*:*22.3 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r1-s2:*:*:*:*:*:*22.3 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r2:*:*:*:*:*:*22.3 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r2-s1:*:*:*:*:*:*22.3 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:*22.4VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:*22.4 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:*22.4 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:*22.4 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:23.1:r1:*:*:*:*:*:*23.1 r1VulnerableJuniper
cpe:2.3:h:juniper:ex4100:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:ex4400:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5100-96s:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5130:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5200:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5200-32c:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5200-48y:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5210:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5210-64c:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5220:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:qfx5700:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
  • cpe:2.3:o:juniper:junos:22.2:r3:*:*:*:*:*:* Versions 22.2 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:-:*:*:*:*:*:* Versions 22.3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r1:*:*:*:*:*:* Versions 22.3 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r1-s1:*:*:*:*:*:* Versions 22.3 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r1-s2:*:*:*:*:*:* Versions 22.3 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r2:*:*:*:*:*:* Versions 22.3 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r2-s1:*:*:*:*:*:* Versions 22.3 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:* Versions 22.4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:* Versions 22.4 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:* Versions 22.4 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:* Versions 22.4 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.1:r1:*:*:*:*:*:* Versions 23.1 r1 Vulnerable ·Juniper
  • cpe:2.3:h:juniper:ex4100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:ex4400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:ex4600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5100-96s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5110:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5120:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5130:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5200-32c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5200-48y:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5210:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5210-64c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5220:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:qfx5700:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper

Remediation

  • Fix · CNA Junos OS (Juniper Networks) Fixed in 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.1R2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-21595
  2. 2026-10-03 Alias added: GHSA-38gm-m6ww-x846

References

Advisory 2

  • TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
  • TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
  • TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3
See all 792 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences