Denial of Service Vulnerability in sqlparse Package: CVE-2024-4340
Summary
UBUNTU-CVE-2024-4340: Passing a heavily nested list to sqlparse.parse() leads to a Denial of Service due to RecursionError. Affects sqlparse versions < 0.4.2-1ubuntu0.22.04.2. Fixed in 0.4.2-1ubuntu0.22.04.2. How to fix ↓
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Background
The sqlparse package is a non-validating SQL parser for Python, designed to provide a simple interface for parsing SQL statements. It is widely used in applications that require SQL syntax analysis and formatting. The package is known for its ease of use and flexibility, allowing developers to manipulate SQL queries effectively. However, it is susceptible to a Denial of Service (DoS) vulnerability due to improper handling of deeply nested lists.
Vulnerability Detail
The vulnerability, identified as CVE-2024-4340, arises when a heavily nested list is passed to the sqlparse.parse() function. This can lead to a RecursionError, causing the application to crash and resulting in a Denial of Service. The issue stems from the way the parser processes nested structures, which can exhaust the call stack, especially with complex SQL queries. The potential ramifications include application downtime and service unavailability, impacting users and dependent systems.
How To Fix
Minimum fixed version
0.4.2-1ubuntu0.22.04.2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade sqlparseTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, avoid passing heavily nested lists to the sqlparse.parse() function until the package is updated. This can prevent the RecursionError from occurring.
Conclusion
In summary, CVE-2024-4340 is a significant vulnerability in the sqlparse package that can lead to Denial of Service. It is crucial to update to the latest patched versions to mitigate the risk and ensure application stability. Users are encouraged to monitor their dependencies and utilize tools like Vulert for real-time vulnerability alerts.
See every vulnerability recorded for sqlparse →
FAQ
CVE-2024-4340 is a vulnerability in the sqlparse package that can lead to a Denial of Service due to RecursionError when processing deeply nested lists.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The primary consequence is a Denial of Service, which can cause application crashes and service unavailability for users.
You can update the sqlparse package using the command: sudo apt update && sudo apt upgrade sqlparse in your terminal.
Yes, updating to the patched versions of sqlparse (0.4.2-1ubuntu0.22.04.2 for Ubuntu 22.04 LTS or 0.4.4-1ubuntu0.1 for Ubuntu 24.04 LTS) will permanently fix the vulnerability.
Related vulnerabilities
Recent vulnerabilities recorded for sqlparse.
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