CVE-2022-2182 in vim
Summary
by MITRE • 06/23/2022
Heap-based Buffer Overflow in GitHub repository vim/vim prior to 8.2.
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Analysis
by VulDB Data Team • 05/24/2026
The heap-based buffer overflow vulnerability identified as CVE-2022-2182 affects the popular text editor vim versions prior to 8.2. This vulnerability resides within the vim repository hosted on GitHub and represents a critical security flaw that could potentially allow remote code execution or denial of service conditions. The vulnerability manifests in the heap memory management portion of the software, specifically during certain operations that involve buffer handling and memory allocation processes. The flaw is particularly concerning because vim is widely used across various operating systems and development environments, making the potential attack surface extensive.
The technical implementation of this buffer overflow occurs when the software processes certain input data structures that are handled through heap memory allocation routines. When maliciously crafted input is processed by vim, the program fails to properly validate the size of data being copied into heap-allocated buffers, leading to memory corruption. This type of vulnerability falls under CWE-122, which specifically addresses heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent heap memory locations. The vulnerability is particularly dangerous because it can be triggered through normal text processing operations, making exploitation relatively straightforward for attackers who understand the input patterns that trigger the flawed code paths.
The operational impact of CVE-2022-2182 extends beyond simple denial of service scenarios to include potential remote code execution capabilities. When exploited successfully, attackers could manipulate heap memory contents to redirect program execution flow, potentially allowing arbitrary code execution with the privileges of the user running vim. This makes the vulnerability particularly attractive to threat actors targeting development environments, system administrators, or users who frequently process untrusted text files. The vulnerability affects installations where vim is used to process user input or file content, including web applications that may incorporate vim functionality or systems where vim serves as a default editor. Attackers could leverage this vulnerability through various vectors including malformed text files, network-based input processing, or even through web interfaces that utilize vim's text handling capabilities.
Mitigation strategies for CVE-2022-2182 primarily focus on immediate software updates to vim version 8.2 or later, which contain the necessary patches to address the heap buffer overflow condition. System administrators should prioritize patching vulnerable installations across all environments where vim is deployed, particularly in development, testing, and production systems. Additional defensive measures include implementing input validation controls, restricting vim execution privileges where possible, and monitoring for anomalous memory allocation patterns that might indicate exploitation attempts. Organizations should also consider implementing application whitelisting controls to prevent unauthorized versions of vim from executing on systems. From an ATT&CK framework perspective, this vulnerability maps to techniques involving buffer overflow exploitation and privilege escalation, with potential lateral movement capabilities if exploited in environments where vim is used for system administration tasks. The vulnerability demonstrates the importance of proper memory management practices and input validation in preventing heap-based memory corruption attacks that can lead to complete system compromise.