Red Hat Developer Hub Orchestrator Plugin GraphQL Injection Vulnerability Leading to Denial-of-Service

A GraphQL injection vulnerability has been identified in the Orchestrator Plugin of Red Hat Developer Hub (Backstage). This issue arises from inadequate input validation in GraphQL query processing. An authenticated user can inject malicious input into API requests, disrupting backend query handling. Consequently, the entire Backstage application crashes and restarts, causing a platform-wide denial-of-service (DoS) condition. As a result, legitimate users temporarily lose access to the platform.

Impact

Exploitation of this vulnerability causes the Backstage application to crash and restart, leading to a platform-wide denial-of-service condition. This disruption temporarily prevents legitimate users from accessing the platform.

Reproduction

To reproduce this vulnerability, an authenticated user can send GraphQL API requests with specially crafted JSON payloads that include malicious fragments, such as manipulated 'orderBy' or 'filter' values. This injection disrupts the query structure, causing unhandled exceptions that crash the application.

Remediation

To mitigate this vulnerability, restrict network access to the Red Hat Developer Hub instance to trusted users and networks only. This limits exposure of the vulnerable Orchestrator Plugin to unauthorized access.