CVE-2023-34236 – Information Disclosure Vulnerability in Weave GitOps Terraform Controller

https://notcve.org/view.php?id=CVE-2023-34236

Weave GitOps Terraform Controller (aka Weave TF-controller) is a controller for Flux to reconcile Terraform resources in a GitOps way. A vulnerability has been identified in Weave GitOps Terraform Controller which could allow an authenticated remote attacker to view sensitive information. This vulnerability stems from Weave GitOps Terraform Runners (`tf-runner`), where sensitive data is inadvertently printed - potentially revealing sensitive user data in their pod logs. In particular, functions `tfexec.ShowPlan`, `tfexec.ShowPlanRaw`, and `tfexec.Output` are implicated when the `tfexec` object set its `Stdout` and `Stderr` to be `os.Stdout` and `os.Stderr`. An unauthorized remote attacker could exploit this vulnerability by accessing these prints of sensitive information, which may contain configurations or tokens that could be used to gain unauthorized control or access to resources managed by the Terraform controller. • https://github.com/weaveworks/tf-controller/commit/28282bc644054e157c3b9a3d38f1f9551ce09074 https://github.com/weaveworks/tf-controller/commit/6323b355bd7f5d2ce85d0244fe0883af3881df4e https://github.com/weaveworks/tf-controller/commit/9708fda28ccd0466cb0a8fd409854ab4d92f7dca https://github.com/weaveworks/tf-controller/commit/98a0688036e9dbcf43fa84960d9a1ef3e09a69cf https://github.com/weaveworks/tf-controller/issues/637 https://github.com/weaveworks/tf-controller/issues/649 https://github.com/weaveworks/tf-controller/security/advisories/GHSA-6hvv-j432-23cv • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •