CVE-2022-22247

Junos OS Evolved: Kernel processing of unvalidated TCP segments could lead to a Denial of Service (DoS)

Published Oct 18, 2022 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
An Improper Input Validation vulnerability in ingress TCP segment processing of Juniper Networks Junos OS Evolved allows a network-based unauthenticated attacker to send a crafted TCP segment to the device, triggering a kernel panic, leading to a Denial of Service (DoS) condition. Continued receipt and processing of this TCP segment could create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO.

Remediation

Vendor Solution

The following software releases have been updated to resolve this specific issue: Junos OS Evolved 21.3R3-EVO, 21.4R2-EVO, 22.1R2-EVO, 22.2R1-EVO, and all subsequent releases.


Vendor Workaround

There are no viable workarounds for this issue.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-27394 An Improper Input Validation vulnerability in ingress TCP segment processing of Juniper Networks Junos OS Evolved allows a network-based unauthenticated attacker to send a crafted TCP segment to the device, triggering a kernel panic, leading to a Denial of Service (DoS) condition. Continued receipt and processing of this TCP segment could create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO.
References
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00028}

epss

{'score': 0.00035}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
juniper
Published
Updated
May 9, 2025, 3:35 PM
Reserved
Dec 21, 2021, 12:00 AM
Status
Modified
Published
Oct 18, 2022, 3:15 AM
Modified
Jun 17, 2026, 4:28 AM