SB2020021703 - Improper Authentication in Istio
Published: February 17, 2020
Security Bulletin ID
SB2020021703
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Authentication (CVE-ID: CVE-2020-8843)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in Mixer policy checks. Istio-proxy accepts x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to source equal to ingress. A remote attacker can bypass authentication process and gain unauthorized access to the application.
Remediation
Install update from vendor's website.