Heap-based Buffer Overflow Vulnerability in vim Package
Summary
ALPINE-CVE-2021-3875: vim is vulnerable to Heap-based Buffer Overflow. Affects vim versions < 8.2.3500-r0. Fixed in 8.2.3500-r0. How to fix ↓
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Background
The vim package is a highly configurable text editor used for efficient text editing and programming. It is widely utilized in various operating systems due to its powerful features and extensibility. However, it has been identified to have a critical vulnerability that could lead to severe security issues if not addressed promptly.
Vulnerability Detail
The vulnerability identified as CVE-2021-3875 is a heap-based buffer overflow in the vim package. This flaw arises from improper handling of memory allocation, which can be exploited by an attacker to execute arbitrary code or crash the application. The potential ramifications include unauthorized access to system resources and data corruption, making it crucial for users to address this vulnerability immediately.
How To Fix
Minimum fixed version
8.2.3500-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 vulnerability until the package is updated. However, the best course of action is to apply the patch as soon as possible.
Conclusion
The heap-based buffer overflow vulnerability in the vim package (CVE-2021-3875) poses a significant risk to users. It is essential to update to the patched version 8.2.3500-r0 to mitigate potential threats. Users are encouraged to utilize tools like Vulert for ongoing monitoring of their software for vulnerabilities.
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FAQ
CVE-2021-3875 is a vulnerability in the vim package that allows for a heap-based buffer overflow, potentially leading to arbitrary code execution.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Failing to fix this vulnerability could lead to unauthorized access, data corruption, and system crashes, posing significant security risks.
Yes, Vulert can monitor and alert you in real-time for open-source vulnerabilities using just a manifest file like package-lock.json.
The CVSS score for this vulnerability is 5.5, indicating a moderate severity level.
References
Related vulnerabilities
Recent vulnerabilities recorded for vim.
