Istio is an open platform to connect, manage, and secure microservices. In affected versions, ill-formed headers sent to Envoy in certain configurations can lead to unexpected memory access resulting in undefined behavior or crashing. Users are most likely at risk if they have an Istio ingress Gateway exposed to external traffic. This vulnerability affects versions prior to 1.12.8, 1.13.x prior to 1.13.5 and 1.14.x prior to 1.14.1. Users are advised to upgrade. There are no known workarounds for this issue.
CWE-125 - Out-of-Bounds Read
Out-of-bounds read is a vulnerability that allows access to memory beyond the authorized accessible location. Such a vulnerability compromises the confidentiality of the trusted environment in the application and enables an attacker to launch further attacks by leveraging the exposed information.