cve/2023/CVE-2023-45812.md

### [CVE-2023-45812](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-45812)
![](https://img.shields.io/static/v1?label=Product&message=router&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20%3E%3D%201.31.0%2C%20%3C%201.33.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-754%3A%20Improper%20Check%20for%20Unusual%20or%20Exceptional%20Conditions&color=brighgreen)

### Description

The Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when a multi-part response is sent. When users send queries to the router that uses the `@defer` or Subscriptions, the Router will panic. To be vulnerable, users of Router must have a coprocessor with `coprocessor.supergraph.response` configured in their `router.yaml` and also to support either `@defer` or Subscriptions. Apollo Router version 1.33.0 has a fix for this vulnerability which was introduced in PR #4014. Users are advised to upgrade. Users unable to upgrade should avoid using the coprocessor supergraph response or disable defer and subscriptions support and continue to use the coprocessor supergraph response.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds