SB2023062301 - Privilege escalation in Kubernetes Operations (kOps)
Published: June 23, 2023
Security Bulletin ID
SB2023062301
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Privilege Management (CVE-ID: CVE-2023-1943)
CWE-ID: CWE-269 - Improper Privilege Management
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote user to escalate privileges within the cluster.
The vulnerability exists due to improper privilege management in kOps with the GCP Provider running in Gossip Mode. A remote user can abuse the Node service account credentials, used by a container running in the cluster, to retrieve sensitive information from the state storage bucket and escalate to cluster-admin permissions.
Remediation
Install update from vendor's website.