This security bulletin contains one medium risk vulnerability.
Exploit availability: NoDescription
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.Mitigation
Install updates from vendor's website.Vulnerable software versions
Istio: 1.3 - 1.3.6
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.