SB2022011918 - Multiple vulnerabilities in Istio

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper Authorization (CVE-ID: CVE-2022-21679)

The vulnerability allows a remote attacker to bypass authorization check.

The vulnerability exists due to incorrect configuration for proxies in the "hosts" and "notHosts" fields. A remote attacker can cause requests to accidentally bypass or get rejected by the authorization policy.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-21701)

The vulnerability allows a remote authenticated attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in Kubernetes Gateway API, which leads to security restrictions bypass and privilege escalation.

Remediation

Install update from vendor's website.

References

• https://istio.io/latest/news/security/istio-security-2022-001
• https://istio.io/latest/news/security/istio-security-2022-002