Horizon Alert
Summary of the vulnerability and why it matters
Renovate, a tool for automating software dependency updates, has a vulnerability where it may send sensitive registry credentials to unintended servers when processing package version information. This occurs if a malicious or compromised package registry provides specially crafted pagination links. While exploitation requires a compromised registry, it allows credentials to be sent to an additional, attacker-chosen location.
- Credentials can be sent to wrong servers.
- Concerns if automated dependency updates are used.
- Confirm relevance and exposure for Renovate.
Attack Path
How an attacker could exploit the issue
An attacker can trick Renovate, a tool for updating software packages, into sending sensitive registry credentials to a server they control. This happens when Renovate checks for new package versions and follows a special link provided by a malicious or compromised package registry. Instead of staying on the legitimate registry's site, Renovate mistakenly sends credentials to the attacker's chosen server, potentially exposing them.
- Requires a malicious NuGet registry.
- Vulnerability triggered by following `Link` header.
- Risk of credentials sent to attacker server.
Live Threat
Current exploitation, exposure, and threat context
Renovate could send registry credentials to an attacker-controlled server if it queries a malicious or compromised NuGet registry that provides a crafted `Link` header during package version listing. This scenario requires a specifically compromised or malicious registry.
- Registry credentials at risk.
- Malicious NuGet registry redirects requests.
- Credentials sent to attacker-controlled host.
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability in Renovate, a dependency update tool, poses a risk to credentials when listing package versions from a NuGet registry. Platform or CI/CD teams are likely responsible for managing Renovate's deployment and configuration. The first practical step is to confirm Renovate's presence, assess its reachability and criticality, and identify the accountable owner before planning remediation.
- Platform/CI/CD teams should own the issue.
- Verify affected Renovate instances and their reachability.
- Plan remediation based on exposure and business impact.
