CVE-2023-53158
📋 TL;DR
This vulnerability in the gix-transport Rust crate allows remote command execution via specially crafted SSH URLs containing ProxyCommand injection. It affects applications using vulnerable versions of gix-transport for Git operations over SSH, particularly when cloning repositories from untrusted sources.
💻 Affected Systems
- gix-transport Rust crate
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution on the client system when processing malicious SSH URLs, potentially leading to full system compromise.
Likely Case
Limited command execution in the context of the user running the Git client, potentially stealing credentials or deploying malware.
If Mitigated
No impact if proper input validation and patched versions are used, or if SSH URLs are only used with trusted sources.
🎯 Exploit Status
Exploitation requires user interaction (cloning a malicious repository) but no authentication. The vulnerability is similar to CVE-2024-32884 but easier to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.36.1
Vendor Advisory: https://rustsec.org/advisories/RUSTSEC-2023-0064.html
Restart Required: No
Instructions:
1. Update Cargo.toml to require gix-transport >=0.36.1. 2. Run 'cargo update' to fetch the patched version. 3. Rebuild and redeploy your application.
🔧 Temporary Workarounds
Disable SSH transport
allConfigure applications to use only HTTP/HTTPS for Git operations instead of SSH
Input validation
allImplement strict validation of SSH URLs before passing to gix-transport
🧯 If You Can't Patch
- Restrict Git operations to trusted repositories only
- Run Git operations in isolated containers or sandboxes
🔍 How to Verify
Check if Vulnerable:
Check Cargo.lock or run 'cargo tree | grep gix-transport' to see if version <0.36.1 is usedCheck Version:
cargo tree | grep gix-transportVerify Fix Applied:
Verify gix-transport version is >=0.36.1 in Cargo.lock after update📡 Detection & Monitoring
Log Indicators:
- Unusual SSH URL patterns containing ProxyCommand or special characters in Git operations
Network Indicators:
- SSH connections to unexpected hosts during Git operations
SIEM Query:
process:git AND command_line:*ProxyCommand* OR command_line:*$IFS*