CVE-2022-0417 – CVE-2022-0417 is a heap-based buffer overflow v... (How to Fix)

Q: What is the severity of CVE-2022-0417?

CVE-2022-0417 has a CVSS score of 7.8 (HIGH). CVE-2022-0417 is a heap-based buffer overflow vulnerability in Vim text editor versions prior to 8.2. This allows attackers to execute arbitrary code by tricking users into opening specially crafted files. Anyone using vulnerable Vim versions on any operating system is affected.

📋 TL;DR

CVE-2022-0417 is a heap-based buffer overflow vulnerability in Vim text editor versions prior to 8.2. This allows attackers to execute arbitrary code by tricking users into opening specially crafted files. Anyone using vulnerable Vim versions on any operating system is affected.

💻 Affected Systems

Products:

Vim text editor

Versions: All versions prior to 8.2

Operating Systems: Linux, Unix-like systems, Windows, macOS

Default Config Vulnerable: ⚠️ Yes

Notes: All Vim installations with default configurations are vulnerable. ViM (Vi IMproved) is affected, not original vi.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution with the privileges of the Vim user, potentially leading to full system compromise.

🟠

Likely Case

Local privilege escalation or arbitrary code execution when users open malicious files.

🟢

If Mitigated

Limited impact if systems are patched, users have minimal privileges, and file execution is restricted.

🌐 Internet-Facing: LOW - Vim is typically not directly internet-facing, though could be exploited via web interfaces or file uploads.

🏢 Internal Only: MEDIUM - Internal users could exploit via shared files or social engineering.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires user interaction to open a malicious file. Proof-of-concept exists in the public commit.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Vim 8.2 and later

Vendor Advisory: https://github.com/vim/vim/commit/652dee448618589de5528a9e9a36995803f5557a

Restart Required: No

Instructions:

1. Update Vim using your system's package manager. 2. For Linux: 'sudo apt update && sudo apt upgrade vim' (Debian/Ubuntu) or 'sudo yum update vim' (RHEL/CentOS). 3. For Windows/macOS: Download latest version from vim.org. 4. Verify version with 'vim --version'.

🔧 Temporary Workarounds

Restrict file execution

all

Prevent execution of untrusted files in Vim

chmod -x suspicious_file.txt
set modeline=0 in .vimrc

Use alternative editor

linux

Temporarily use nano, emacs, or other text editors

alias vim='nano'
export EDITOR=nano

🧯 If You Can't Patch

Restrict user privileges to minimize impact of potential exploitation
Implement application allowlisting to prevent execution of malicious payloads

🔍 How to Verify

Check if Vulnerable:

Run 'vim --version' and check if version is below 8.2. Look for 'Included patches: 1-XXXX' where XXXX < 4190.

Check Version:

vim --version | head -1

Verify Fix Applied:

Run 'vim --version' and confirm version is 8.2 or higher, or patches include 4190+.

📡 Detection & Monitoring

Log Indicators:

Segmentation fault crashes in Vim process logs
Abnormal memory usage patterns in system logs

Network Indicators:

Unusual outbound connections from Vim process

SIEM Query:

process_name:vim AND (event_id:1000 OR signal:11 OR exit_code:139)

📊 Metadata

CVE ID: CVE-2022-0417

CVSS v3 Score: 7.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE: CWE-122

Published: February 1, 2022

Last Updated: November 3, 2025

🔗 References

https://github.com/vim/vim/commit/652dee448618589de5528a9e9a36995803f5557a Patch,Third Party Advisory
https://huntr.dev/bounties/fc86bc8d-c866-4ade-8b7f-e49cec306d1a Exploit,Patch,Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00014.html Mitigation,Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html Mailing List,Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ZLEHVP4LNAGER4ZDGUDS5V5YVQD6INF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFXFAILMLUIK4MBUEZO4HNBNKYZRJ5AP/
https://security.gentoo.org/glsa/202208-32 Third Party Advisory
https://github.com/vim/vim/commit/652dee448618589de5528a9e9a36995803f5557a Patch,Third Party Advisory
https://huntr.dev/bounties/fc86bc8d-c866-4ade-8b7f-e49cec306d1a Exploit,Patch,Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00014.html Mitigation,Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00009.html Mailing List,Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ZLEHVP4LNAGER4ZDGUDS5V5YVQD6INF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFXFAILMLUIK4MBUEZO4HNBNKYZRJ5AP/
https://security.gentoo.org/glsa/202208-32 Third Party Advisory

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🔗 Related Vulnerabilities

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