Critical Out-of-Bounds Read Vulnerability in vim Package
Summary
ALPINE-CVE-2021-4166: vim is vulnerable to Out-of-bounds Read. Affects vim versions < 8.2.4173-r0. Fixed in 8.2.4173-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 due to its powerful features, including syntax highlighting, multi-level undo, and extensive plugin support. However, like many software packages, it can be susceptible to vulnerabilities that may compromise its security and functionality.
Vulnerability Detail
The vulnerability identified as CVE-2021-4166 in the vim package is an Out-of-Bounds Read issue. This flaw arises from improper handling of memory, which can lead to unauthorized access to sensitive data or application crashes. Attackers may exploit this vulnerability to read memory locations that should not be accessible, potentially leading to information disclosure or further exploitation of the system. The CVSS score for this vulnerability is 7.1, indicating a high severity level.
How To Fix
Minimum fixed version
8.2.4173-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 updating is not feasible, consider restricting access to the vim application or using alternative text editors until the patch can be applied. Additionally, monitor for any unusual activity that may indicate exploitation of this vulnerability.
Conclusion
The Out-of-Bounds Read vulnerability in the vim package poses a serious risk to users, but it can be mitigated by updating to the latest patched version. Users are encouraged to monitor their systems and utilize tools like Vulert for ongoing vulnerability management.
See every vulnerability recorded for vim →
FAQ
CVE-2021-4166 is a vulnerability in the vim package that allows for Out-of-Bounds Read, potentially leading to unauthorized data access.
You can use the Vulert platform to check if your application is affected by this vulnerability without needing to install any software.
Exploitation of this vulnerability could lead to information disclosure or system crashes, posing a significant risk to system integrity.
Yes, a patch is available in version 8.2.4173-r0 and later. Users should update their vim package to this version.
Vulert monitors open-source vulnerabilities in software using a manifest file like package-lock.json, providing real-time alerts without requiring code access.
References
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