# MA-1191.112024: MyCERT Advisory - Critical Vulnerability in Apache ZooKeeper

**Date:** 11 Nov 2024  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-1191.112024  
**Advisory ID:** MA-1191.112024

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**1.0 Introduction**
Recently, Apache has released security updates to a critical vulnerability in Apache ZooKeeper’s Admin Server component.
**2.0 Impact**
This vulnerability allows potential attackers to bypass authentication through IP spoofing, posing a significant risk to the integrity and security of ZooKeeper deployments.
**3.0 Affected Products**
- Apache ZooKeeper versions prior to 3.9.3
**4.0 Recommendations**
CyberSecurity Malaysia urges users and organisations to review the [Apache Security Bulletin](https://httpd.apache.org/download.cgi), follow the Mitigation steps and apply the necessary updates. 
Kindly refer to the URL for more information: <https://lists.apache.org/thread/nh6wzylzy5m5p3xzj57g56o5mk4mmwpv>
Generally, Cyber999 advises the users of these devices 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 Cyber999 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 08:30 -17.30 MYT 
Web: [https://www.mycert.org.my](https://www.mycert.org.my/)
**5.0    References**
- <https://lists.apache.org/thread/nh6wzylzy5m5p3xzj57g56o5mk4mmwpv>
- <https://zookeeper.apache.org/releases.html>
- <https://httpd.apache.org/download.cgi>