Integer Overflow Vulnerability in SQLite3 - Potential for Arbitrary Code Execution
Summary
DEBIAN-CVE-2025-3277: An integer overflow can be triggered in SQLite’s concat_ws() function. Affects sqlite3 versions < 3.46.1-3. Fixed in 3.46.1-3. How to fix ↓
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Background
SQLite3 is a widely used database engine known for its lightweight and self-contained nature. It is often embedded in applications and provides a full-featured SQL database engine. The specific vulnerability arises from the concat_ws() function, which is responsible for concatenating strings with a specified separator. This function is integral to many applications that rely on SQLite3 for data management. The vulnerability can lead to severe security risks, including arbitrary code execution, if not addressed promptly.
Vulnerability Detail
An integer overflow can be triggered in SQLite’s concat_ws() function. This occurs when the function processes a large number of inputs, resulting in a truncated integer that is used to allocate a buffer. When SQLite writes the resulting string to this buffer, it uses the original, untruncated size, leading to a wild Heap Buffer overflow of approximately 4GB. This overflow can allow attackers to execute arbitrary code, posing a significant security threat to applications utilizing SQLite3.
How To Fix
Minimum fixed version
3.46.1-3
This is the first release that contains the fix.
sudo apt-get install --only-upgrade sqlite3Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can limit the number of inputs passed to the concat_ws() function to avoid triggering the integer overflow. However, this is not a permanent solution and updating to the patched version is strongly recommended.
Conclusion
The integer overflow vulnerability in SQLite3's concat_ws() function poses a significant risk of arbitrary code execution. Users are strongly advised to update to the patched version (3.46.1-3) to protect their applications. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
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FAQ
The vulnerability is an integer overflow in the concat_ws() function, which can lead to a Heap Buffer overflow and potential arbitrary code execution.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The primary risk is arbitrary code execution, which can allow attackers to take control of the affected system, leading to data breaches or system compromise.
Yes, a patched version of SQLite3 (3.46.1-3) is available. Users should update to this version to mitigate the vulnerability.
If an immediate update is not possible, limit the inputs to the concat_ws() function to prevent triggering the overflow as a temporary measure.
References
Related vulnerabilities
Recent vulnerabilities recorded for sqlite3.
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