CVE-2024-36127
📋 TL;DR
apko versions before 0.14.5 expose HTTP basic authentication credentials in log output when repository or keyring URLs contain authentication information. This allows attackers with access to logs to steal credentials and potentially access protected repositories. Anyone using apko with authenticated repository URLs is affected.
💻 Affected Systems
- apko
⚠️ 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
Attackers gain access to protected package repositories, enabling supply chain attacks, unauthorized package uploads, or credential reuse against other systems.
Likely Case
Credentials exposed in logs are harvested by attackers with log access, leading to unauthorized repository access and potential package tampering.
If Mitigated
With proper log access controls and credential rotation, impact is limited to credential exposure without further exploitation.
🎯 Exploit Status
Exploitation requires access to apko logs containing the exposed credentials. No authentication bypass is involved.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.14.5
Vendor Advisory: https://github.com/chainguard-dev/apko/security/advisories/GHSA-v6mg-7f7p-qmqp
Restart Required: No
Instructions:
1. Update apko to version 0.14.5 or later using your package manager. 2. For Go installations: 'go install github.com/chainguard-dev/apko@latest'. 3. Verify the update with 'apko version'.
🔧 Temporary Workarounds
Remove credentials from URLs
allUse environment variables or configuration files instead of embedding credentials in repository URLs.
export APKO_REPO_USER=username
export APKO_REPO_PASSWORD=password
Restrict log access
linuxImplement strict access controls on apko log files to prevent unauthorized viewing.
chmod 600 /var/log/apko.log
setfacl -m u:apko:r /var/log/apko.log
🧯 If You Can't Patch
- Rotate all exposed credentials immediately
- Implement log monitoring for credential exposure patterns
🔍 How to Verify
Check if Vulnerable:
Check if apko version is below 0.14.5 and if repository URLs contain HTTP basic auth credentials.Check Version:
apko versionVerify Fix Applied:
Run 'apko version' and confirm version is 0.14.5 or higher. Test with a repository URL containing credentials and verify they don't appear in logs.📡 Detection & Monitoring
Log Indicators:
- Log entries containing 'https://user:password@' patterns
- Repository URLs with embedded credentials in apko output
Network Indicators:
- Unauthorized access attempts to protected repositories using credentials from logs
SIEM Query:
source="apko.log" AND "@" AND ("http://" OR "https://")🔗 References
- https://github.com/chainguard-dev/apko/commit/2c0533e4d52e83031a04f6a83ec63fc2a11eff01
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-v6mg-7f7p-qmqp
- https://github.com/chainguard-dev/apko/commit/2c0533e4d52e83031a04f6a83ec63fc2a11eff01
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-v6mg-7f7p-qmqp
