# MA-1019.012024: MyCERT Advisory - High-Severity Vulnerability in Juniper Networks Junos OS

**Date:** 30 Jan 2024  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-1019.012024  
**Advisory ID:** MA-1019.012024

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**1.0 Introduction**
Recently, Juniper Networks has released a security advisory to address a vulnerability (CVE-2024-21611) in Junos OS and Junos OS Evolved.
**2.0 Impact**
A cyber threat actor could exploit this vulnerability to cause a denial-of-service condition.
**3.0 Affected Products**
- Junos OS 21.4, 22.1, 22.2.
- This issue affects Junos OS Evolved 21.4-EVO, 22.1-EVO, 22.2-EVO.
**4.0 Recommendations**
CyberSecurity Malaysia encourages users and administrators to review the Juniper Advisory [JSA75752](https://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-In-a-jflow-scenario-continuous-route-churn-will-cause-a-memory-leak-and-eventually-an-rpd-crash-CVE-2024-21611?language=en_US) and apply the necessary updates.
Kindly refer to the following URL for more information: <https://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-In-a-jflow-scenario-continuous-route-churn-will-cause-a-memory-leak-and-eventually-an-rpd-crash-CVE-2024-21611?language=en_US>
Generally, we advise the users to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact the Cyber999 Incident Response Team through the following channels:
E-mail: cyber999[at]cybersecurity.my 
Phone: 1-300-88-2999 (monitored during business hours) 
Mobile: +60 19 2665850 (24x7 call incident reporting) 
Business Hours: Mon - Fri 09:00 -18:00 MYT 
Web: <https://www.mycert.org.my> 
Twitter: <https://twitter.com/mycert> 
Facebook: <https://www.facebook.com/mycert.org.my>
**5.0    References**
- <https://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-In-a-jflow-scenario-continuous-route-churn-will-cause-a-memory-leak-and-eventually-an-rpd-crash-CVE-2024-21611?language=en_US>
- <https://www.cisa.gov/news-events/alerts/2024/01/11/juniper-networks-releases-security-bulletin-junos-os-and-junos-os-evolved>