SQLite Vulnerability: Improper Handling of pExpr->y.pTab in SQLite 3.30.1
Summary
ALPINE-CVE-2019-19242: SQLite 3.30.1 mishandles pExpr->y.pTab, as demonstrated by the TK_COLUMN case in sqlite3ExprCodeTarget in expr.c. Affects sqlite versions < 3.28.0-r2. Fixed in 3.28.0-r2. How to fix ↓
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Background
SQLite is a widely-used, lightweight, serverless SQL database engine. It is known for its simplicity and efficiency, making it a popular choice for embedded database systems. The vulnerability in question affects multiple versions of SQLite, particularly version 3.30.1, where improper handling of certain expressions can lead to potential security risks.
Vulnerability Detail
The vulnerability arises from the mishandling of the pExpr->y.pTab structure in SQLite, specifically in the TK_COLUMN case within the sqlite3ExprCodeTarget function in expr.c. This flaw can lead to unexpected behavior, including potential data corruption or unauthorized access to sensitive information. The vulnerability has been assigned the CVE identifier CVE-2019-19242 and has a CVSS score of 5.9, indicating a moderate level of risk.
How To Fix
Minimum fixed version
3.28.0-r2
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
As a temporary workaround, users can avoid using the affected features of SQLite until the package is updated. However, it is strongly advised to apply the patch as soon as possible to mitigate any risks.
Conclusion
In summary, the vulnerability CVE-2019-19242 in SQLite poses a moderate security risk due to improper handling of certain expressions. Users are strongly encouraged to update their SQLite packages to the latest versions to protect against potential exploits.
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FAQ
CVE-2019-19242 is a vulnerability in SQLite that involves improper handling of the pExpr->y.pTab structure, which can lead to security risks.
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 5.9, indicating a moderate level of risk.
You should update your SQLite package to the latest patched version as soon as possible to mitigate this vulnerability.
While there are no specific known exploits publicly available, the nature of the vulnerability poses potential risks that could be exploited by malicious actors.
References
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