CVE-2022-22184: Junos OS and Junos OS Evolved: A BGP session will flap upon receipt of a specific, optional transitive attribute in version 22.3R1
First published: Thu Dec 22 2022(Updated: )
An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a Denial of Service (DoS). If a BGP update message is received over an established BGP session, and that message contains a specific, optional transitive attribute, this session will be torn down with an update message error. This issue cannot propagate beyond an affected system as the processing error occurs as soon as the update is received. This issue is exploitable remotely as the respective attribute will propagate through unaffected systems and intermediate AS (if any). Continuous receipt of a BGP update containing this attribute will create a sustained Denial of Service (DoS) condition. Since this issue only affects 22.3R1, Juniper strongly encourages customers to move to 22.3R1-S1. Juniper SIRT felt that the need to promptly warn customers about this issue affecting the 22.3R1 versions of Junos OS and Junos OS Evolved warranted an Out of Cycle JSA. This issue affects: Juniper Networks Junos OS version 22.3R1. Juniper Networks Junos OS Evolved version 22.3R1-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 22.3R1. Juniper Networks Junos OS Evolved versions prior to 22.3R1-EVO.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | =22.3-r1 | |
| Juniper Junos Os Evolved | =22.3-r1 |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS: 22.3R1-S1, 22.3R2, 22.4R1, and all subsequent releases; Junos OS Evolved: 22.3R1-S1-EVO, 22.3R2-EVO, 22.4R1-EVO, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is CVE-2022-22184?
CVE-2022-22184 is an Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved.
What is the severity of CVE-2022-22184?
The severity of CVE-2022-22184 is high with a CVSS score of 7.5.
Which software is affected by CVE-2022-22184?
CVE-2022-22184 affects Juniper Networks Junos OS and Junos OS Evolved versions 22.3-r1.
How does CVE-2022-22184 impact systems?
CVE-2022-22184 allows an unauthenticated network-based attacker to cause a Denial of Service (DoS) by sending a specially crafted BGP update message.
Is there a fix for CVE-2022-22184?
Yes, Juniper Networks has released a security advisory (JSA70175) that provides information on how to mitigate the vulnerability.
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