Howardjohn

Name of the Vulnerable Software and Affected Versions cel-rust versions 0.10.0 through 0.11.3 Description cel-rust is a Common Expression Language interpreter written in Rust. Parsing specific, malformed Common Expression Language (CEL) expressions can cause the parser to terminate unexpectedly. If used to evaluate untrusted expressions, such as user-supplied input received through an API, an attacker can send crafted input to trigger a denial of service (DoS). Recommendations Update to version 0.11.4 or later.

Name of the Vulnerable Software and Affected Versions: Envoy versions prior to 1.28.7 Envoy versions prior to 1.29.9 Envoy versions prior to 1.30.6 Envoy versions prior to 1.31.2 Description: A vulnerability has been identified in Envoy that allows malicious attackers to inject unexpected content into access logs. This is achieved by exploiting the lack of validation for the `REQUESTED SERVER NAME` field for access loggers. Recommendations: For versions prior to 1.28.7, upgrade to version 1.28.7 or later. For versions prior to 1.29.9, upgrade to version 1.29.9 or later. For versions prior to 1.30.6, upgrade to version 1.30.6 or later. For versions prior to 1.31.2, upgrade to version 1.31.2 or later.

**Name of the Vulnerable Software and Affected Versions** Istio versions 1.15.x prior to 1.15.3 **Description** A user can impersonate any workload identity within the service mesh if they have localhost access to the Istiod control plane. **Recommendations** For versions prior to 1.15.3, upgrade to version 1.15.3 or later to resolve the issue. As a temporary workaround, consider restricting localhost access to the Istiod control plane until a patch is applied.

**Name of the Vulnerable Software and Affected Versions** Istio versions prior to 1.15.2 Istio versions prior to 1.14.5 Istio versions prior to 1.13.9 **Description** Istio is an open platform-independent service mesh that provides traffic management, policy enforcement, and telemetry collection. The Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker to send a specially crafted or oversized message, which results in the control plane crashing when the Kubernetes validating or mutating webhook service is exposed publicly. This endpoint is served over TLS port 15017, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially external istiod topologies, this port is exposed over the public internet. The issue is due to an error in `regexp.Compile` in Go. **Recommendations** For versions prior to 1.15.2, upgrade to version 1.15.2 or later. For versions prior to 1.14.5, upgrade to version 1.14.5 or later. For versions prior to 1.13.9, upgrade to version 1.13.9 or later. As a temporary workaround, consider restricting access to the Kubernetes validating or mutating webhook service to minimize the risk of exploitation.

**Name of the Vulnerable Software and Affected Versions** Istio versions prior to 1.12.8 Istio versions prior to 1.13.5 Istio versions prior to 1.14.1 **Description** The issue arises from ill-formed headers sent to Envoy in certain configurations, leading to unexpected memory access, which can result in undefined behavior or crashing. Users are most likely at risk if they have an Istio ingress Gateway exposed to external traffic. **Recommendations** For versions prior to 1.12.8, upgrade to version 1.12.8 or later. For versions prior to 1.13.5, upgrade to version 1.13.5 or later. For versions prior to 1.14.1, upgrade to version 1.14.1 or later. As a temporary workaround, consider restricting access to the Istio ingress Gateway to minimize the risk of exploitation.

**Name of the Vulnerable Software and Affected Versions** Istio versions prior to 1.11.8 Istio versions prior to 1.12.5 Istio versions prior to 1.13.2 **Description** Istio is an open platform to connect, manage, and secure microservices. In affected versions, the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing when the validating webhook for a cluster is exposed publicly. This endpoint is served over TLS port 15017, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially external istiod topologies, this port is exposed over the public internet. **Recommendations** For versions prior to 1.11.8, upgrade to version 1.11.8 or later. For versions prior to 1.12.5, upgrade to version 1.12.5 or later. For versions prior to 1.13.2, upgrade to version 1.13.2 or later. As a temporary workaround, consider disabling access to the validating webhook that is exposed to the public internet or restrict the set of IP addresses that can query it to a set of known, trusted entities.

**Name of the Vulnerable Software and Affected Versions** Istio versions 1.12.0 through 1.12.1 **Description** Istio is an open platform to connect, manage, and secure microservices. The issue allows users with `CREATE` permission for `gateways.gateway.networking.k8s.io` objects to escalate this privilege and create other resources they may not have access to, such as `Pod`. This impacts only the Alpha level feature, the Kubernetes Gateway API, and not the Istio Gateway type. **Recommendations** For versions 1.12.0 and 1.12.1, upgrade to a newer version to resolve the issue. As a temporary workaround for versions 1.12.0 and 1.12.1, consider one of the following: remove the gateways.gateway.networking.k8s.io CustomResourceDefinition, set the PILOT ENABLE GATEWAY API DEPLOYMENT CONTROLLER=true environment variable in Istiod, or remove CREATE permissions for gateways.gateway.networking.k8s.io objects from untrusted users.