CVE-2022-2264 in vim
Summary
by MITRE • 07/01/2022
Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.
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Analysis
by VulDB Data Team • 05/24/2026
The heap-based buffer overflow vulnerability identified as CVE-2022-2264 affects the popular text editor vim version prior to 9.0, representing a critical security flaw that can be exploited to execute arbitrary code on affected systems. This vulnerability resides within the vim source code repository maintained by github and demonstrates a classic memory corruption issue that has significant implications for system security. The flaw manifests when the application processes certain input data structures, specifically in how it handles memory allocation and data copying operations within heap memory segments. The vulnerability is classified under CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. Such memory corruption can lead to unpredictable application behavior including crashes, data corruption, or more dangerously, remote code execution. The attack surface is particularly concerning as vim is widely used across various operating systems and environments, making it a prime target for exploitation.
The technical implementation of this vulnerability occurs during specific parsing operations within vim's internal codebase where heap-allocated memory is manipulated without proper bounds verification. When processing malformed input or specific sequences of characters, the application fails to validate the size of data being copied into heap-allocated buffers, allowing attackers to write beyond the allocated memory boundaries. This flaw can be triggered through various attack vectors including opening malicious files, processing specially crafted input streams, or interacting with vulnerable network services that utilize vim for text processing. The heap overflow condition creates opportunities for attackers to manipulate memory layout and potentially overwrite critical program structures such as return addresses or function pointers, enabling arbitrary code execution. The vulnerability's exploitation requires careful crafting of input data that can be delivered through file-based attacks or network-based interactions, making it particularly dangerous in environments where vim processes untrusted content.
The operational impact of CVE-2022-2264 extends beyond simple application instability to encompass serious security compromise risks across enterprise and individual computing environments. Organizations utilizing vim in their development workflows, system administration tasks, or automated processes face potential compromise when running vulnerable versions, as attackers can leverage this vulnerability to gain unauthorized access to systems. The vulnerability affects not only desktop environments but also server configurations where vim may be used for log analysis, configuration file manipulation, or automated scripting tasks. System administrators and security professionals must consider the widespread use of vim across different platforms including linux, unix, and windows systems that support vim installations. The attack chain for exploitation typically follows the pattern of input manipulation followed by memory corruption and code execution, which aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1203 for exploitation for execution. This vulnerability can also be leveraged in combination with other attack vectors to escalate privileges or establish persistent access within compromised environments.
Mitigation strategies for CVE-2022-2264 primarily focus on immediate version updates to vim 9.0 or later, which contain the necessary patches to address the heap-based buffer overflow condition. System administrators should prioritize patching affected installations across all environments where vim is deployed, including development workstations, server systems, and containerized environments. Additional defensive measures include implementing input validation controls, restricting file access permissions, and deploying application whitelisting policies that limit vim execution to trusted contexts. Organizations should also consider implementing network segmentation and monitoring to detect potential exploitation attempts targeting this vulnerability. The remediation process requires careful testing of patched versions to ensure compatibility with existing workflows and automated processes that depend on vim functionality. Security teams should monitor for indicators of compromise related to this vulnerability and maintain awareness of potential related threats that may emerge from similar memory corruption issues in other software components. Regular vulnerability assessment programs should include scanning for this specific CVE to ensure comprehensive coverage of potential attack surfaces within the organization's infrastructure.