Terragrunt is a flexible orchestration tool that allows Infrastructure as Code written in OpenTofu or Terraform to scale. Prior to 1.0.4, Terragrunt trusts paths decoded from a downloaded module's .terragrunt-module-manifest during fileManifest.Clean() in internal/util/file.go. A malicious or compromised external module can place absolute or traversal paths in the manifest, causing cleanup to delete files outside the module cache that are accessible to the Terragrunt process before OpenTofu or Terraform executes.
This deletion-only primitive can remove local source code or configuration and disrupt CI/CD pipelines. This issue is fixed in version 1.0.4.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/gruntwork-io/terragrunt/commit/3d6f10d6bccc851c6506a307a0b86…
security-advisories@github.com
https://github.com/gruntwork-io/terragrunt/pull/6032
security-advisories@github.com
https://github.com/gruntwork-io/terragrunt/releases/tag/v1.0.4
security-advisories@github.com
https://github.com/gruntwork-io/terragrunt/security/advisories/GHSA-8394-6f8r-w…
security-advisories@github.com