CVE-2023-34236
Weave GitOps Terraform Controller Sensitive Data Disclosure Vulnerability
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.
INFO
Published Date :
July 14, 2023, 10:15 p.m.
Last Modified :
July 31, 2023, 5:07 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.7
Exploitability Score :
3.1
References to Advisories, Solutions, and Tools
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CVE-2023-34236.
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CVE-2023-34236 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-34236 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jul. 31, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/weaveworks/tf-controller/commit/28282bc644054e157c3b9a3d38f1f9551ce09074 No Types Assigned https://github.com/weaveworks/tf-controller/commit/28282bc644054e157c3b9a3d38f1f9551ce09074 Patch Changed Reference Type https://github.com/weaveworks/tf-controller/commit/6323b355bd7f5d2ce85d0244fe0883af3881df4e No Types Assigned https://github.com/weaveworks/tf-controller/commit/6323b355bd7f5d2ce85d0244fe0883af3881df4e Patch Changed Reference Type https://github.com/weaveworks/tf-controller/commit/9708fda28ccd0466cb0a8fd409854ab4d92f7dca No Types Assigned https://github.com/weaveworks/tf-controller/commit/9708fda28ccd0466cb0a8fd409854ab4d92f7dca Patch Changed Reference Type https://github.com/weaveworks/tf-controller/commit/98a0688036e9dbcf43fa84960d9a1ef3e09a69cf No Types Assigned https://github.com/weaveworks/tf-controller/commit/98a0688036e9dbcf43fa84960d9a1ef3e09a69cf Patch Changed Reference Type https://github.com/weaveworks/tf-controller/issues/637 No Types Assigned https://github.com/weaveworks/tf-controller/issues/637 Exploit, Issue Tracking Changed Reference Type https://github.com/weaveworks/tf-controller/issues/649 No Types Assigned https://github.com/weaveworks/tf-controller/issues/649 Exploit, Issue Tracking, Patch Changed Reference Type https://github.com/weaveworks/tf-controller/security/advisories/GHSA-6hvv-j432-23cv No Types Assigned https://github.com/weaveworks/tf-controller/security/advisories/GHSA-6hvv-j432-23cv Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:weave:gitops_terraform_controller:*:*:*:*:*:*:*:* versions up to (excluding) 0.14.4 *cpe:2.3:a:weave:gitops_terraform_controller:0.15.0:rc1:*:*:*:*:*:* *cpe:2.3:a:weave:gitops_terraform_controller:0.15.0:rc2:*:*:*:*:*:* *cpe:2.3:a:weave:gitops_terraform_controller:0.15.0:rc3:*:*:*:*:*:* *cpe:2.3:a:weave:gitops_terraform_controller:0.15.0:rc4:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-34236 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-34236
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.16 }} 0.02%
score
0.52698
percentile