SB2019042212 - Credentials management in Kubernetes
Published: April 22, 2019 Updated: August 8, 2020
Security Bulletin ID
SB2019042212
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Credentials management (CVE-ID: CVE-2019-11243)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
In Kubernetes v1.12.0-v1.12.4 and v1.13.0, the rest.AnonymousClientConfig() method returns a copy of the provided config, with credentials removed (bearer token, username/password, and client certificate/key data). In the affected versions, rest.AnonymousClientConfig() did not effectively clear service account credentials loaded using rest.InClusterConfig()
Remediation
Install update from vendor's website.