CVE-2022-1440
📋 TL;DR
CVE-2022-1440 is a command injection vulnerability in git-interface@2.1.1 that allows attackers to execute arbitrary operating system commands by exploiting the --upload-pack argument in git clone operations. This affects applications using the vulnerable git-interface library version 2.1.1 or earlier. Attackers can achieve remote code execution if they control user input for both repository URL and upload-pack arguments.
💻 Affected Systems
- git-interface
📦 What is this software?
Git Interface by Git Interface Project
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the affected server, allowing data theft, lateral movement, and persistent backdoor installation.
Likely Case
Remote code execution leading to data exfiltration, cryptocurrency mining, or participation in botnets.
If Mitigated
No impact if proper input validation and sanitization are implemented, or if the vulnerable library is patched.
🎯 Exploit Status
Exploitation requires user input control over both parameters, but the vulnerability is straightforward to exploit once those conditions are met.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.2
Vendor Advisory: https://github.com/yarkeev/git-interface/commit/f828aa790016fee3aa667f7b44cf94bf0aa8c60d
Restart Required: No
Instructions:
1. Update git-interface to version 2.1.2 or later using npm: npm update git-interface@2.1.2
2. Verify the update completed successfully
3. Test git clone functionality to ensure no regression
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation to reject any user input containing shell metacharacters or suspicious patterns in git clone parameters.
Disable Upload-Pack Feature
allRemove or disable the --upload-pack argument functionality in git clone operations if not required for your use case.
🧯 If You Can't Patch
- Implement strict input validation to reject shell metacharacters in user-controlled git parameters
- Run the application with minimal privileges and in a sandboxed environment
🔍 How to Verify
Check if Vulnerable:
Check package.json or run: npm list git-interface | grep git-interfaceCheck Version:
npm list git-interface | grep git-interfaceVerify Fix Applied:
Verify installed version is 2.1.2 or later: npm list git-interface📡 Detection & Monitoring
Log Indicators:
- Unusual git clone commands with --upload-pack arguments
- Suspicious shell commands executed from git processes
- Failed git clone attempts with unusual parameters
Network Indicators:
- Git operations from unexpected sources
- Unusual network connections following git clone operations
SIEM Query:
process.name:git AND cmdline:*upload-pack* AND cmdline:*;* OR cmdline:*&* OR cmdline:*|*🔗 References
- https://github.com/yarkeev/git-interface/commit/f828aa790016fee3aa667f7b44cf94bf0aa8c60d
- https://huntr.dev/bounties/cdc25408-d3c1-4a9d-bb45-33b12a715ca1
- https://github.com/yarkeev/git-interface/commit/f828aa790016fee3aa667f7b44cf94bf0aa8c60d
- https://huntr.dev/bounties/cdc25408-d3c1-4a9d-bb45-33b12a715ca1
