This security bulletin contains one medium risk vulnerability.
Exploit availability: NoDescription
The vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due to application does not properly impose security restrictions.
DestinationRule can load private keys and certificates from Kubernetes
secrets via the
For Istio 1.8 and above, the secrets are conveyed from Istiod to gateways or workloads via the XDS API.
In the above approach, a gateway or workload deployment should only be able to access credentials (TLS certificates and private keys) stored in the Kubernetes secrets within its namespace. However, a bug in Istiod permits an authorized client the ability to access and retrieve any TLS certificate and private key cached in Istiod.Mitigation
Install updates from vendor's website.Vulnerable software versions
Istio: 1.8.0 - 1.10.1
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?