Heap-based Buffer Overflow in Vim: Critical Vulnerability Detected
Summary
ALPINE-CVE-2022-0361: Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2. Affects vim versions < 8.2.4619-r0. Fixed in 8.2.4619-r0. How to fix ↓
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Background
Vim is a highly configurable text editor built to enable efficient text editing. It is widely used by developers and system administrators for its powerful features, including syntax highlighting, multi-level undo, and extensive plugin support. However, Vim has been found to have a critical vulnerability that could lead to severe security risks, particularly in versions prior to 8.2.4619-r0 and 8.2.4350-r0, depending on the Alpine version.
Vulnerability Detail
The vulnerability, identified as CVE-2022-0361, is a heap-based buffer overflow that occurs in Vim prior to version 8.2.4619-r0 for Alpine v3.12 to v3.15, and prior to version 8.2.4350-r0 for Alpine v3.16 and later. This flaw can be exploited by an attacker to execute arbitrary code, potentially leading to unauthorized access, data corruption, or system compromise. The vulnerability arises from improper handling of memory, which allows attackers to manipulate the heap memory structure.
How To Fix
Minimum fixed version
8.2.4619-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
As a temporary workaround, users can avoid using features that may trigger the buffer overflow until the package is updated. Additionally, running Vim in a restricted environment or using alternative text editors may help mitigate the risk.
Conclusion
The heap-based buffer overflow vulnerability in Vim poses significant security risks for users of affected versions. It is essential to update to the patched versions to mitigate these risks. Users should also consider using tools like Vulert for ongoing vulnerability monitoring.
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FAQ
CVE-2022-0361 is a critical vulnerability in Vim that allows for heap-based buffer overflow, potentially leading to arbitrary code execution.
You can check your Vim version by running 'vim --version' in the terminal. If your version is prior to 8.2.4619-r0 or 8.2.4350-r0, it is affected.
Exploitation of this vulnerability could allow attackers to execute arbitrary code, leading to unauthorized access, data corruption, or system compromise.
Yes, Vulert can monitor and alert in real-time for open-source vulnerabilities using just a manifest file like package-lock.json.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
References
Related vulnerabilities
Recent vulnerabilities recorded for vim.
