SB2021011281 - Information disclosure in Azure Active Directory Pod Identity
Published: January 12, 2021
Security Bulletin ID
SB2021011281
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2021-1677)
The vulnerability allows a local user to gain access to potentially sensitive information.
The AAD pod identity enables users to assign identities to pods in Kubernetes clusters and fetch them from the pods using a regular IMDS (Azure Instance Metadata Service) request. When an identity is assigned to a pod, the pod can access to the IMDS endpoint and get a token of that identity. An attacker who successfully exploited this vulnerability can laterally steal the identities that are associated with different pods.
Remediation
Install update from vendor's website.