Integer Overflow Vulnerability in SQLite Package - CVE-2020-13434
Summary
ALPINE-CVE-2020-13434: SQLite through 3.32.0 has an integer overflow in sqlite3_str_vappendf in printf.c. Affects sqlite versions < 3.32.1-r0. Fixed in 3.32.1-r0. How to fix ↓
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Background
SQLite is a widely-used, lightweight, serverless SQL database engine that is embedded into applications. It is known for its simplicity and efficiency, making it a popular choice for mobile applications, web browsers, and other software. The vulnerability in question affects versions of SQLite up to 3.32.0, where an integer overflow can occur in the sqlite3_str_vappendf function, potentially leading to unexpected behavior or crashes.
Vulnerability Detail
The vulnerability, identified as CVE-2020-13434, originates from an integer overflow in the sqlite3_str_vappendf function within SQLite. This flaw can be exploited by attackers to manipulate the database engine's behavior, potentially leading to data corruption or application crashes. The technical aspect of this vulnerability lies in how the function handles string formatting, which can be exploited if the input exceeds expected limits. The CVSS score for this vulnerability is 5.5, indicating a moderate severity level.
How To Fix
Minimum fixed version
3.32.1-r0
This is the first release that contains the fix.
sudo apk add --upgrade sqliteTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updating is not feasible, consider implementing input validation to limit the size of strings passed to the sqlite3_str_vappendf function. This can help mitigate the risk of exploitation until the package can be updated.
Conclusion
The integer overflow vulnerability in SQLite (CVE-2020-13434) poses a risk to applications using affected versions of the package. It is crucial to update to the patched version (3.32.1-r0) to mitigate potential risks. Additionally, using input validation can help reduce the likelihood of exploitation until an update can be applied.
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FAQ
CVE-2020-13434 is a vulnerability in SQLite that involves an integer overflow in the sqlite3_str_vappendf function, which can lead to application crashes or data corruption.
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 CVSS score for this vulnerability is 5.5, indicating a moderate severity level.
Update the SQLite package to version 3.32.1-r0 using the command 'apk add sqlite=3.32.1-r0' in your Alpine Linux environment.
Implementing input validation to limit the size of strings passed to the sqlite3_str_vappendf function can serve as a temporary workaround.
References
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