CVE-2023-34236
Information Disclosure Vulnerability in Weave GitOps Terraform Controller
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High8.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.96% · top 38% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.5.
Weakness
Affected products
- affected < 0.14.4
- affected >= 0.15.0-rc.1, < 0.15.0-rc.5
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/weaveworks/tf-controllerGHSA-6hvv-j432-23cv (opens in a new tab)
References (7)
- https://github.com/weaveworks/tf-controller/security/advisories/GHSA-6hvv-j432-23cv (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/weaveworks/tf-controller/issues/637 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/weaveworks/tf-controller/issues/649 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/weaveworks/tf-controller/commit/28282bc644054e157c3b9a3d38f1f9551ce09074 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/weaveworks/tf-controller/commit/6323b355bd7f5d2ce85d0244fe0883af3881df4e (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/weaveworks/tf-controller/commit/9708fda28ccd0466cb0a8fd409854ab4d92f7dca (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/weaveworks/tf-controller/commit/98a0688036e9dbcf43fa84960d9a1ef3e09a69cf (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-6hvv-j432-23cv (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-34236)Record last updated .