Heap-Based Buffer Overflow in ICU Package: CVE-2017-7867
Summary
ALPINE-CVE-2017-7867: International Components for Unicode (ICU) for C/C++ before 2017-02-13 has an out-of-bounds write caused by a heap-based buffer overflow related to the utf8TextAccess function in common/utext.cpp and the utext_setNativeI... Affects icu versions < 58.2-r2. Fixed in 58.2-r2. How to fix ↓
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Background
The International Components for Unicode (ICU) is a mature, widely-used library that provides robust and full-featured Unicode and Globalization support for software applications. It is essential for handling text in various languages and scripts, enabling developers to create applications that can operate in multiple locales. However, a vulnerability has been identified in ICU versions prior to 2017-02-13, which exposes applications to potential security risks.
Vulnerability Detail
The vulnerability, identified as CVE-2017-7867, is a heap-based buffer overflow that occurs due to an out-of-bounds write in the utf8TextAccess function within the common/utext.cpp file. This flaw can lead to arbitrary code execution, allowing attackers to exploit the vulnerability to execute malicious code, potentially compromising the integrity and confidentiality of the affected system. The vulnerability has a CVSS score of 7.5, indicating a high severity level.
How To Fix
Minimum fixed version
58.2-r2
This is the first release that contains the fix.
sudo apk add --upgrade icuTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updating is not feasible, consider isolating the application using the ICU library from untrusted inputs or limiting its exposure to potentially harmful data until the patch can be applied.
Conclusion
The CVE-2017-7867 vulnerability in the ICU package poses a significant risk due to its potential for arbitrary code execution. It is crucial for users to update to the patched version to mitigate this risk. Utilizing tools like Vulert can aid in monitoring and managing vulnerabilities effectively.
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FAQ
CVE-2017-7867 is a vulnerability in the ICU package that allows for a heap-based buffer overflow, potentially leading to arbitrary code execution.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without requiring any signup.
If you cannot update the package, consider implementing workarounds such as isolating the application from untrusted inputs until a patch can be applied.
Exploitation of this vulnerability could lead to arbitrary code execution, compromising the integrity and confidentiality of the affected system.
More information about the ICU package can be found on its official website or through its documentation, which provides insights into its features and usage.
References
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