Heap-based Buffer Overflow Vulnerability in vim Package
Summary
ALPINE-CVE-2021-3968: vim is vulnerable to Heap-based Buffer Overflow. Affects vim versions < 8.2.3650-r0. Fixed in 8.2.3650-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 environments due to its powerful features, including syntax highlighting, multi-file editing, and extensive plugin support. However, the package is susceptible to a heap-based buffer overflow vulnerability, which can lead to severe security risks if not addressed promptly.
Vulnerability Detail
The vulnerability identified as CVE-2021-3968 in the vim package is a heap-based buffer overflow. This issue arises from improper handling of memory allocation, which can allow an attacker to exploit the overflow to execute arbitrary code or crash the application. The potential ramifications include unauthorized access to sensitive data, system instability, and complete system compromise. The CVSS score for this vulnerability is 8.0, indicating a high severity level.
How To Fix
Minimum fixed version
8.2.3650-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 limit the use of vim in environments where security is a concern until the package is updated. Additionally, consider using alternative text editors that do not exhibit this vulnerability.
Conclusion
The heap-based buffer overflow vulnerability in the vim package poses significant security risks. Users are strongly advised to update to the patched version 8.2.3650-r0 to mitigate these risks. Regular updates and monitoring for vulnerabilities are essential for maintaining a secure software environment.
See every vulnerability recorded for vim →
FAQ
CVE-2021-3968 is a heap-based buffer overflow vulnerability found in the vim package, which can lead 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.
The risks include unauthorized access to sensitive data, potential system crashes, and the possibility of a complete system takeover by an attacker.
It is recommended to regularly check for updates and apply them promptly to mitigate vulnerabilities and enhance security.
Vulert is a service that monitors and alerts for open-source vulnerabilities in software using just a manifest file like package-lock.json, ensuring real-time awareness of security issues.
References
Related vulnerabilities
Recent vulnerabilities recorded for vim.
