0.51: kubernetes scanner requires role permissions

[chen-keinan]

Discussed in #6653

^{Originally posted by jkroepke May 7, 2024}

Description

I'm running trivy with an limited scope of permissions

Before 0.51, i'm runing trivy with following settings:

      trivy --quiet -q kubernetes --report=all \
        --components workload \
        --disable-node-collector \
        --cache-dir /tmp/.trivycache/ \
        --no-progress \
        --ignore-unfixed \
        --exit-code 0 \
        --slow \
        --format table \
        --scanners vuln \
        --ignorefile /.trivyignore \
        --vuln-type os \
        -n opsstack \
        -o "/scans/report.all.html" \
        deploy,sts,ds;

with works fine. After upgrade, I'm using the following command

      trivy kubernetes --report=all \
        --disable-node-collector \
        --cache-dir /tmp/.trivycache/ \
        --no-progress \
        --ignore-unfixed \
        --exit-code 0 \
        --slow \
        --format table \
        --scanners vuln \
        --ignorefile /.trivyignore \
        --vuln-type os \
        --include-namespaces opsstack \
        -o "/scans/report.all.html" \
        --include-kinds deploy,sts,ds;

I'm getting an error that trivy has no access to roles. However, trivy should not ask for roles.

Desired Behavior

Except that trivy is scanning the workload of deployments, statefulsets and daemonsets

Actual Behavior

2024-05-07T15:49:56Z FATAL Fatal error get k8s artifacts error: failed listing resources for gvr: rbac.authorization.k8s.io/v1, Resource=roles - roles.rbac.authorization.k8s.io is forbidden: User "system:serviceaccount:opsstack:opsstack-trivy" cannot list resource "roles" in API group "rbac.authorization.k8s.io" at the cluster scope

Reproduction Steps

1. Setup trivy using a context with namespace access only
2. Run the command above
3.
...

Target

Kubernetes

Scanner

Vulnerability

Output Format

Table

Mode

Standalone

Debug Output

2024-05-07T15:51:34Z    DEBUG   Parsed severities       severities=[UNKNOWN LOW MEDIUM HIGH CRITICAL]
2024-05-07T15:51:34Z    DEBUG   Ignore statuses statuses=[0 1 2 4 5 6 7]
2024-05-07T15:51:40Z    FATAL   Fatal error
  - get k8s artifacts error:
    github.com/aquasecurity/trivy/pkg/k8s/commands.clusterRun
        /home/runner/work/trivy/trivy/pkg/k8s/commands/cluster.go:49
  - failed listing resources for gvr: rbac.authorization.k8s.io/v1, Resource=roles - roles.rbac.authorization.k8s.io is forbidden: User "system:serviceaccount:opsstack:opsstack-trivy" cannot list resource "roles" in API group "rbac.authorization.k8s.io" at the cluster scope

Operating System

Linux

Version

Version: 0.51.1

Checklist

• Run trivy image --reset
• Read the troubleshooting

[chen-keinan]

fixed by #6707