CVE-2025-53905
📋 TL;DR
A path traversal vulnerability in Vim's tar.vim plugin allows specially crafted tar archives to overwrite arbitrary files when opened. This affects Vim users who open untrusted tar archives, requiring direct user interaction but potentially leading to file corruption or code execution.
💻 Affected Systems
- Vim
📦 What is this software?
Vim by Vim
⚠️ Risk & Real-World Impact
Worst Case
Arbitrary file overwrite leading to privilege escalation, sensitive data destruction, or remote code execution if executable files are placed in privileged locations.
Likely Case
Local file corruption or overwrite of user files when opening malicious tar archives, with limited scope due to user interaction requirement.
If Mitigated
No impact if users don't open untrusted tar archives or have patched Vim versions.
🎯 Exploit Status
Exploitation requires user interaction to open a malicious tar archive and may be detectable by observant users due to unusual file paths/content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.1.1552
Vendor Advisory: https://github.com/vim/vim/security/advisories/GHSA-74v4-f3x9-ppvr
Restart Required: No
Instructions:
1. Update Vim to version 9.1.1552 or later. 2. For package managers: 'sudo apt update && sudo apt upgrade vim' (Debian/Ubuntu) or 'sudo yum update vim' (RHEL/CentOS). 3. For source builds: Pull latest from https://github.com/vim/vim and rebuild.
🔧 Temporary Workarounds
Disable tar.vim plugin
allPrevent Vim from automatically processing tar archives by disabling the tar.vim plugin
Add 'let g:loaded_tarPlugin = 1' to your .vimrc file
Use alternative archive tools
linuxExtract tar archives using command-line tools instead of opening directly in Vim
Use 'tar -xf archive.tar' to extract before editing files
🧯 If You Can't Patch
- Avoid opening untrusted tar archives directly in Vim - extract first using system tools
- Implement user awareness training about risks of opening untrusted archives
🔍 How to Verify
Check if Vulnerable:
Check Vim version with 'vim --version' and verify it's below 9.1.1552Check Version:
vim --version | head -1Verify Fix Applied:
Confirm Vim version is 9.1.1552 or higher with 'vim --version | head -1'📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns when Vim processes tar archives
- Vim process accessing unexpected file paths
Network Indicators:
- Download of tar archives followed by Vim process execution
SIEM Query:
Process: (vim OR gvim) AND FilePath: (*.tar OR *.tar.gz OR *.tgz)