Critical Vulnerability in pdns Package: CVE-2006-4251
Summary
DSA-1211-1: pdns. Affects pdns versions < 2.9.17-13sarge3. Fixed in 2.9.17-13sarge3. How to fix ↓
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Background
pdns (PowerDNS) is an open-source DNS server software that provides a variety of features including authoritative DNS services and recursive DNS resolution. It is widely used for its performance and flexibility in managing DNS records. However, the package has been found to have a critical vulnerability that can affect its security and reliability.
Vulnerability Detail
The vulnerability identified as CVE-2006-4251 allows for potential denial of service attacks against the pdns server. This issue originates from improper handling of certain DNS queries, which can lead to resource exhaustion and service disruption. Attackers can exploit this vulnerability to crash the server or make it unresponsive, impacting the availability of DNS services for users.
How To Fix
Minimum fixed version
2.9.17-13sarge3
This is the first release that contains the fix.
sudo apt-get install --only-upgrade pdnsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, administrators can limit the number of concurrent DNS queries or implement rate limiting on the server to reduce the impact of potential attacks until the package can be updated.
Conclusion
The pdns package has a critical vulnerability (CVE-2006-4251) that can lead to denial of service attacks. It is essential to update to the patched version 2.9.17-13sarge3 to ensure the security and reliability of your DNS services. Temporary workarounds can help mitigate risks until the update is applied.
See every vulnerability recorded for pdns →
FAQ
CVE-2006-4251 is a vulnerability in the pdns package that can lead to denial of service attacks, causing the DNS server to crash or become unresponsive.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Exploitation of this vulnerability can lead to service disruptions, making DNS services unavailable to users, which can have significant impacts on web accessibility.
Yes, the patched version of the pdns package is 2.9.17-13sarge3. Updating to this version will resolve the vulnerability.
If immediate updates are not possible, consider implementing rate limiting or other security measures to mitigate the risk until the update can be applied.
Related vulnerabilities
Recent vulnerabilities recorded for pdns.
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