BIND9 TCP DNS Message Flood Vulnerability - DEBIAN-CVE-2024-0760
Summary
DEBIAN-CVE-2024-0760: A malicious client can send many DNS messages over TCP, potentially causing the server to become unstable while the attack is in progress. Affects bind9 versions < 1:9.18.28-1~deb12u1. Fixed in 1:9.18.28-1~deb12u1. How to fix ↓
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Background
BIND9 is a widely used DNS server software that provides a robust and flexible DNS service. It is essential for translating domain names into IP addresses, enabling users to access websites and services. BIND9 is known for its reliability and extensive feature set, but it is also susceptible to various vulnerabilities, including the one described in this report.
Vulnerability Detail
The vulnerability identified as DEBIAN-CVE-2024-0760 allows a malicious client to send numerous DNS messages over TCP, which can destabilize the server during the attack. This issue affects BIND 9 versions 9.18.1 through 9.18.27, 9.19.0 through 9.19.24, and 9.18.11-S1 through 9.18.27-S1. Although the server may recover after the attack, the instability caused can lead to service interruptions and potential data loss.
How To Fix
Minimum fixed version
1:9.18.28-1~deb12u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade bind9Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There are no effective workarounds mentioned for this vulnerability. It is recommended to apply the patch as soon as it is available.
Conclusion
The DEBIAN-CVE-2024-0760 vulnerability in BIND9 poses a significant risk by allowing TCP message flooding, which can destabilize the server. It is essential to update to the latest patched versions to ensure the security and stability of your DNS services.
See every vulnerability recorded for bind9 →
FAQ
The vulnerability allows a malicious client to flood the DNS server with TCP messages, potentially causing instability.
Affected versions include BIND 9.18.1 through 9.18.27, 9.19.0 through 9.19.24, and 9.18.11-S1 through 9.18.27-S1.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
While there are no effective workarounds, it is crucial to plan for an update as soon as possible to mitigate the risk.
You can visit the official BIND9 documentation or security advisories for detailed information on vulnerabilities and patches.
References
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