CVE-2021-0233

Junos OS: ACX500 Series, ACX4000 Series: Denial of Service due to FFEB crash while processing high rate of specific packets.

Published Apr 22, 2021 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A vulnerability in Juniper Networks Junos OS ACX500 Series, ACX4000 Series, may allow an attacker to cause a Denial of Service (DoS) by sending a high rate of specific packets to the device, resulting in a Forwarding Engine Board (FFEB) crash. Continued receipt of these packets will sustain the Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on ACX500 Series, ACX4000 Series: 17.4 versions prior to 17.4R3-S2.

Remediation

Vendor Solution

The following software releases have been updated to resolve this specific issue: 17.4R3-S2, 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-2021-2852 A vulnerability in Juniper Networks Junos OS ACX500 Series, ACX4000 Series, may allow an attacker to cause a Denial of Service (DoS) by sending a high rate of specific packets to the device, resulting in a Forwarding Engine Board (FFEB) crash. Continued receipt of these packets will sustain the Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on ACX500 Series, ACX4000 Series: 17.4 versions prior to 17.4R3-S2.
References
History

No history.

Sources

Status
PUBLISHED
Assigner
juniper
Published
Updated
Sep 16, 2024, 6:14 PM
Reserved
Oct 27, 2020, 12:00 AM
Status
Modified
Published
Apr 22, 2021, 8:15 PM
Modified
Jun 17, 2026, 3:29 AM