Critical Denial of Service Vulnerability in PostgreSQL 17
Summary
USN-7520-2: postgresql-17 vulnerability. Affects postgresql-17 versions < 17.5-0ubuntu0.25.04.1. Fixed in 17.5-0ubuntu0.25.04.1. How to fix ↓
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Background
PostgreSQL is a powerful, open-source relational database management system known for its robustness, scalability, and support for advanced data types and performance optimization. The package version 17.5-0ubuntu0.25.04.1 has been identified to have a vulnerability that affects its ability to handle specific character encodings, notably GB18030. This vulnerability can lead to service interruptions, impacting applications relying on PostgreSQL for data management.
Vulnerability Detail
The vulnerability, identified as CVE-2025-4207, arises from PostgreSQL's improper handling of the GB18030 encoding. This flaw can be exploited by an attacker to cause the PostgreSQL server to crash, resulting in a denial of service. The issue was first reported in the context of USN-7520-1, which addressed the vulnerability in earlier versions of PostgreSQL. The potential ramifications include service downtime and loss of availability for applications dependent on the database.
How To Fix
Minimum fixed version
17.5-0ubuntu0.25.04.1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade postgresql-17Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users may consider disabling the GB18030 encoding if it is not essential for their applications. However, this is not a long-term solution and updating to the patched version is strongly recommended.
Conclusion
In summary, the PostgreSQL 17 package has a critical vulnerability that can lead to denial of service due to improper handling of GB18030 encoding. It is crucial to update to the patched version to ensure the security and availability of your database services. Regular monitoring for vulnerabilities using tools like Vulert can help maintain the integrity of your software.
See every vulnerability recorded for postgresql-17 →
FAQ
The vulnerability is a denial of service issue caused by improper handling of the GB18030 encoding in PostgreSQL.
You can verify if your installation is affected by using the Vulert playground at Vulert Scanner, which allows you to check for vulnerabilities without requiring any signup.
Failure to address this vulnerability may lead to service disruptions, crashes, and potential data unavailability for applications relying on PostgreSQL.
Yes, Vulert provides a service that monitors open-source vulnerabilities in your software using a manifest file like package-lock.json.
If immediate updates are not possible, consider disabling the GB18030 encoding as a temporary workaround until you can apply the patch.
References
Related vulnerabilities
Recent vulnerabilities recorded for postgresql-17.
