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Vulnerability DatabaseCVE-2021-3236
CVE-2021-3236:
NixOS vulnerability analysis and mitigation
Overview
A null pointer dereference vulnerability was discovered in Vim version 8.2.2348, identified as CVE-2021-3236. The vulnerability exists in the ex_buffer_all method and allows local attackers to cause a denial of service (DoS) (NVD).
Technical details
The vulnerability occurs due to a lack of verification of wp->w_buffer in the ex_buffer_all function located in src/buffer.c. When accessing the buffer structure, the code attempts to dereference a null pointer, which leads to a segmentation fault (GitHub Issue).
Impact
The successful exploitation of this vulnerability results in a denial of service condition through application crash. The vulnerability has been assigned a CVSS score of 5.5 (MEDIUM) with the vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (NetApp Security).
Exploitability
The vulnerability requires local access and user interaction to be exploited. It can be triggered by executing specific commands in Vim that lead to the null pointer dereference in the ex_buffer_all method (GitHub Issue).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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