Devtron is an open source tool integration platform for Kubernetes. In version 2.0.0 and prior, a vulnerability exists in Devtron's Attributes API interface, allowing any authenticated user (including low-privileged CI/CD Developers) to obtain the global API Token signing key by accessing the /orchestrator/attributes?key=apiTokenSecret endpoint. After obtaining the key, attackers can forge JWT tokens for arbitrary user identities offline, thereby gaining complete control over the Devtron platform and laterally moving to the underlying Kubernetes cluster. This issue has been patched via commit d2b0d26.

Affected: Go: github.com/devtron-labs/devtron

# Devtron Attributes API Unauthorized Access Leading to API Token Signing Key Leakage

## Summary

This vulnerability exists in Devtron's Attributes API interface, allowing any authenticated user (including low-privileged CI/CD Developers) to obtain the global API Token signing key by accessing the `/orchestrator/attributes?key=apiTokenSecret` endpoint. After obtaining the key, attackers can forge JWT tokens for arbitrary user identities offline, thereby gaining complete control over the Devtron platform and laterally moving to the underlying Kubernetes cluster.

**CWE Classification**: CWE-862 (Missing Authorization)

## Details

### Vulnerability Mechanism

Devtron uses a JWT-based API Token mechanism for authentication. All API Tokens are signed using HMAC-SHA256 with the `apiTokenSecret` stored in the database. This key is exposed through the Attributes API, but the authorization check code for this API has been commented out, allowing any authenticated user to read it.

### Source Code Analysis

**Vulnerability Location**: `api/restHandler/AttributesRestHandlder.go:173-195`

```go func (handler AttributesRestHandlerImpl) GetAttributesByKey(w http.ResponseWriter, r *http.Request) { // Only checks if user is logged in userId, err := handler.userService.GetLoggedInUser(r) if userId == 0 || err != nil { common.HandleUnauthorized(w, r) return }

// CRITICAL: RBAC check is commented out /*token := r.Header.Get("token") if ok := hand…