CVE Catalog

CVE-2023-34236

HighCVSS 8.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.71%

48th percentile - higher than 48% of all known CVEs

Summary

A vulnerability has been identified in Weave GitOps Terraform Controller that could allow an authenticated remote attacker to view sensitive information. The issue stems from the inadvertent printing of sensitive data in pod logs by the `tf-runner`.

Risk Assessment

An attacker could gain access to sensitive data such as configurations or tokens, potentially leading to unauthorized access or control over resources managed by the Terraform controller.

Recommendation

It is recommended to upgrade to versions `v0.14.4` or `v0.15.0-rc.5` to mitigate the vulnerability. As a temporary measure, users can add the environment variable `DISABLE_TF_LOGS` to tf-runners to prevent logging of sensitive information.

Related vulnerabilities

Original NVD description (English source)

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. A successful exploit could allow the attacker to utilize this sensitive data, potentially leading to unauthorized access or control of the system. This vulnerability has been addressed in Weave GitOps Terraform Controller versions `v0.14.4` and `v0.15.0-rc.5`. Users are urged to upgrade to one of these versions to mitigate the vulnerability. As a temporary measure until the patch can be applied, users can add the environment variable `DISABLE_TF_LOGS` to the tf-runners via the runner pod template of the Terraform Custom Resource. This will prevent the logging of sensitive information and mitigate the risk of this vulnerability.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS