Heap-based Buffer Overflow in Vim Package - CVE-2023-4781
Summary
ALPINE-CVE-2023-4781: Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.1873. Affects vim versions < 9.0.2073-r0. Fixed in 9.0.2073-r0. How to fix ↓
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Background
Vim is a highly configurable text editor used for efficiently creating and changing any kind of text. It is known for its powerful features, including syntax highlighting, multi-level undo, and extensive plugin support. However, it has been found vulnerable to a heap-based buffer overflow, which can lead to severe security issues.
Vulnerability Detail
The vulnerability identified as CVE-2023-4781 is a heap-based buffer overflow in the Vim package, specifically in versions prior to 9.0.1873. This flaw can be exploited by attackers to execute arbitrary code, potentially leading to data corruption, unauthorized access, or system crashes. The vulnerability arises from improper handling of memory allocation, making it a critical issue that needs immediate attention.
How To Fix
Minimum fixed version
9.0.2073-r0
This is the first release that contains the fix.
sudo apk add --upgrade vimTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not possible, consider disabling any features or plugins that may trigger the vulnerability until an update can be applied. Additionally, running Vim in a restricted environment can help limit potential damage.
Conclusion
The CVE-2023-4781 vulnerability in the Vim package poses serious security risks due to a heap-based buffer overflow. It is crucial to update to the patched versions to safeguard your systems. Regular monitoring and using tools like Vulert can help maintain security against such vulnerabilities.
See every vulnerability recorded for vim →
FAQ
CVE-2023-4781 is a heap-based buffer overflow vulnerability found in the Vim text editor, which can lead to arbitrary code execution.
You can check your Vim version by running 'vim --version' in your terminal. If it is below 9.0.1873, it is vulnerable.
Exploitation of this vulnerability can lead to data corruption, unauthorized access, and system crashes, posing significant security risks.
You can update Vim by running the command 'apk add vim=9.0.2073-r0' for Alpine v3.18 or 'apk add vim=9.0.1888-r0' for Alpine v3.19 and above.
Vulert is a tool that monitors and alerts for open-source vulnerabilities in software using a manifest file. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.
References
Related vulnerabilities
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