Heap-based Buffer Overflow Vulnerability in vim
Summary
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
vim is a popular text editor that is widely used for editing files on Unix-like operating systems. It provides a powerful and customizable editing experience for developers and system administrators. However, a vulnerability has been discovered in vim that allows for a heap-based buffer overflow.
Vulnerability Detail
The vulnerability, identified as CVE-2021-3875, occurs due to improper handling of certain input in vim. An attacker can exploit this vulnerability by crafting a malicious file or text that triggers the buffer overflow. If successful, the attacker can execute arbitrary code or crash the vim process, potentially leading to a denial-of-service (DoS) condition. The severity of this vulnerability is rated as moderate with a CVSS score of 5.5.
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 workaround, users can avoid opening or editing untrusted files with vim until the vulnerability is patched. Additionally, it is advisable to exercise caution when handling files from unknown or untrusted sources.
Conclusion
The heap-based buffer overflow vulnerability in vim can be mitigated by updating to the latest version of vim. It is important to promptly apply the necessary patches to ensure the security and stability of the vim installation. For further assistance or support in addressing this vulnerability, please contact DevNack.com.
See every vulnerability recorded for vim →
FAQ
The vulnerability allows an attacker to execute arbitrary code or crash the vim process, potentially leading to a denial-of-service condition.
At the time of this report, there are no known public exploits targeting this vulnerability.
Yes, all versions of vim prior to 8.2.3500-r0 are affected by this vulnerability.
No, this vulnerability requires the attacker to have local access to the vulnerable vim installation.
Yes, a fix is available in vim version 8.2.3500-r0 and later.
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