CVE-2022-1897
📋 TL;DR
CVE-2022-1897 is an out-of-bounds write 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
- Vim text editor
📦 What is this software?
Fedora by Fedoraproject
Fedora by Fedoraproject
Fedora by Fedoraproject
Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →Vim by Vim
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the Vim user, potentially leading to full system compromise if the user has elevated privileges.
Likely Case
Local privilege escalation or arbitrary code execution when users open malicious files, potentially leading to data theft or further system compromise.
If Mitigated
Limited impact if users only open trusted files and Vim runs with minimal privileges.
🎯 Exploit Status
Exploitation requires user interaction to open a malicious file. Proof-of-concept details are publicly available in the disclosure references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.2 and later
Vendor Advisory: https://github.com/vim/vim/commit/338f1fc0ee3ca929387448fe464579d6113fa76a
Restart Required: No
Instructions:
1. Update Vim using your system's package manager (apt, yum, brew, etc.) 2. For source installations: git clone https://github.com/vim/vim.git, checkout v8.2+, compile and install 3. Verify installation with 'vim --version'
🔧 Temporary Workarounds
Restrict file opening
allConfigure Vim to only open files from trusted sources and avoid opening unknown files.
Use alternative editor
allTemporarily use a different text editor (nano, emacs, etc.) until Vim is patched.
🧯 If You Can't Patch
- Run Vim with minimal user privileges (non-root, non-admin)
- Implement application allowlisting to restrict Vim execution in sensitive environments
🔍 How to Verify
Check if Vulnerable:
Run 'vim --version' and check if version is less than 8.2Check Version:
vim --version | head -1Verify Fix Applied:
Run 'vim --version' and confirm version is 8.2 or higher📡 Detection & Monitoring
Log Indicators:
- Vim crash logs with segmentation faults
- Unexpected child processes spawned from Vim
Network Indicators:
- Unusual outbound connections from systems where Vim was recently used
SIEM Query:
process_name:vim AND (event_type:crash OR parent_process:unusual)🔗 References
- http://seclists.org/fulldisclosure/2022/Oct/28
- http://seclists.org/fulldisclosure/2022/Oct/41
- https://github.com/vim/vim/commit/338f1fc0ee3ca929387448fe464579d6113fa76a
- https://huntr.dev/bounties/82c12151-c283-40cf-aa05-2e39efa89118
- https://lists.debian.org/debian-lts-announce/2022/11/msg00032.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OZSLFIKFYU5Y2KM5EJKQNYHWRUBDQ4GJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMFHBC5OQXDPV2SDYA2JUQGVCPYASTJB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TYNK6SDCMOLQJOI3B4AOE66P2G2IH4ZM/
- https://security.gentoo.org/glsa/202208-32
- https://security.gentoo.org/glsa/202305-16
- https://support.apple.com/kb/HT213488
- http://seclists.org/fulldisclosure/2022/Oct/28
- http://seclists.org/fulldisclosure/2022/Oct/41
- https://github.com/vim/vim/commit/338f1fc0ee3ca929387448fe464579d6113fa76a
- https://huntr.dev/bounties/82c12151-c283-40cf-aa05-2e39efa89118
- https://lists.debian.org/debian-lts-announce/2022/11/msg00032.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OZSLFIKFYU5Y2KM5EJKQNYHWRUBDQ4GJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMFHBC5OQXDPV2SDYA2JUQGVCPYASTJB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TYNK6SDCMOLQJOI3B4AOE66P2G2IH4ZM/
- https://security.gentoo.org/glsa/202208-32
- https://security.gentoo.org/glsa/202305-16
- https://support.apple.com/kb/HT213488
