Heap-Based Buffer Overflow in MCPP Package: CVE-2019-14274
Summary
UBUNTU-CVE-2019-14274: MCPP 2.7.2 has a heap-based buffer overflow in the do_msg() function in support.c. Affects mcpp versions 2.7.2-4. No fix is published. How to fix ↓
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Background
MCPP (Macro C Preprocessor) is a widely used tool for processing C language source files. It allows developers to manage macros and preprocess code efficiently. The package is essential for building C applications, particularly in environments where macro processing is critical. However, a vulnerability has been identified in version 2.7.2 of MCPP, which could lead to severe security risks if not addressed.
Vulnerability Detail
The vulnerability, identified as CVE-2019-14274, is a heap-based buffer overflow occurring in the do_msg() function located in support.c. This flaw allows an attacker to exploit the buffer overflow, potentially leading to arbitrary code execution or a crash of the application. The vulnerability arises from improper handling of input data, which can overflow the allocated memory buffer, compromising the integrity of the application and the system it runs on.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If immediate patching is not feasible, consider removing the MCPP package temporarily or restricting its use in sensitive environments until the update can be applied. Additionally, ensure that input data is validated and sanitized to prevent exploitation of the buffer overflow.
Conclusion
The CVE-2019-14274 vulnerability in the MCPP package poses significant risks due to a heap-based buffer overflow. It is crucial for users to update to the patched version to safeguard their systems. By following the recommended steps and utilizing tools like Vulert, developers can effectively monitor and manage vulnerabilities in their applications.
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FAQ
CVE-2019-14274 is a vulnerability in the MCPP package that allows for a heap-based buffer overflow, potentially leading to arbitrary code execution.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
Exploitation of this vulnerability can lead to arbitrary code execution, application crashes, and potential system compromise.
Yes, a patched version of the MCPP package (2.7.2-5) is available. Users should update to this version to mitigate the vulnerability.
If you cannot update immediately, consider removing the MCPP package or restricting its use until the update can be applied.
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