CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS
Percentile
5.1%
A vulnerability in GitOps run could allow a local user or process to alter a Kubernetes cluster’s resources.
GitOps run has a local S3 bucket which it uses for synchronising files that are later applied against a Kubernetes cluster. Its endpoint had no security controls to block unauthorised access, therefore allowing local users (and processes) on the same machine to see and alter the bucket content.
By leveraging this vulnerability, an attacker could pick a workload of their choosing and inject it into the S3 bucket, which resulted in the successful deployment in the target cluster, without the need to provide any credentials to either the S3 bucket nor the target Kubernetes cluster.
This vulnerability has been fixed by commits 75268c4 and 966823b. Users should upgrade to Weave GitOps version >= v0.12.0 released on 08/12/2022.
There is no workaround for this vulnerability.
Disclosed by Paulo Gomes, Senior Software Engineer, Weaveworks.
If you have any questions or comments about this advisory:
github.com/weaveworks/weave-gitops
github.com/weaveworks/weave-gitops/pull/3102/commits/966823bbda8c539a4661e2a4f8607c9307ba6225
github.com/weaveworks/weave-gitops/pull/3114/commits/75268c4d2c8f7e4db22c63d76b451ba6545d117f
github.com/weaveworks/weave-gitops/security/advisories/GHSA-wr3c-g326-486c
nvd.nist.gov/vuln/detail/CVE-2022-23508