CVE-2022-2182 – CVE-2022-2182 is a heap-based buffer overflow v... (How to Fix)

Q: What is the severity of CVE-2022-2182?

CVE-2022-2182 has a CVSS score of 7.8 (HIGH). CVE-2022-2182 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 is affected.

📋 TL;DR

CVE-2022-2182 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 is affected.

💻 Affected Systems

Products:

Vim

Versions: All versions prior to 8.2

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

Default Config Vulnerable: ⚠️ Yes

Notes: All standard Vim installations are vulnerable if using affected versions.

📦 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 Vim runs in sandboxed environments or with restricted privileges.

🌐 Internet-Facing: LOW - Vim is typically not directly internet-facing.

🏢 Internal Only: MEDIUM - Internal users could be targeted via malicious files.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires user interaction (opening a malicious file). Proof-of-concept exists in public repositories.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Vim 8.2 and later

Vendor Advisory: https://github.com/vim/vim/commit/f7c7c3fad6d2135d558f3b36d0d1a943118aeb5e

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 access

all

Limit Vim usage to trusted files only

Use alternative editor

all

Temporarily use nano, emacs, or other editors

🧯 If You Can't Patch

Run Vim with reduced privileges (non-root user)
Implement application allowlisting to restrict Vim execution

🔍 How to Verify

Check if Vulnerable:

Run 'vim --version' and check if version is below 8.2

Check Version:

vim --version | head -1

Verify Fix Applied:

Run 'vim --version' and confirm version is 8.2 or higher

📡 Detection & Monitoring

Log Indicators:

Segmentation fault or crash logs from Vim processes
Unusual file access patterns from Vim

Network Indicators:

File downloads followed by Vim execution

SIEM Query:

process_name:vim AND (event_type:crash OR exit_code:139)

📊 Metadata

CVE ID: CVE-2022-2182

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: June 23, 2022

Last Updated: November 21, 2024

🔗 References

https://github.com/vim/vim/commit/f7c7c3fad6d2135d558f3b36d0d1a943118aeb5e Patch,Third Party Advisory
https://huntr.dev/bounties/238d8650-3beb-4831-a8f7-6f0b597a6fb8 Exploit,Patch,Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFD2A4YLBR7OIRHTL7CK6YNMEIQ264CN/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U743FMJGFQ35GBPCQ6OWMVZEJPDFVEWM/
https://security.gentoo.org/glsa/202208-32 Third Party Advisory
https://security.gentoo.org/glsa/202305-16
https://github.com/vim/vim/commit/f7c7c3fad6d2135d558f3b36d0d1a943118aeb5e Patch,Third Party Advisory
https://huntr.dev/bounties/238d8650-3beb-4831-a8f7-6f0b597a6fb8 Exploit,Patch,Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFD2A4YLBR7OIRHTL7CK6YNMEIQ264CN/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U743FMJGFQ35GBPCQ6OWMVZEJPDFVEWM/
https://security.gentoo.org/glsa/202208-32 Third Party Advisory
https://security.gentoo.org/glsa/202305-16

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🔗 Related Vulnerabilities

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