CVE-2016-2004
Missing Authentication for Critical Function in HPE Data Protector before 7
Executive Summary
CVE-2016-2004 is a critical severity vulnerability affecting api-security. It is classified as CWE-306. Ensure your systems and dependencies are patched immediately to mitigate exposure risks.
Precogs AI Insight
"HPE Data Protector contains an unauthenticated remote code execution vulnerability. Attackers exploit insecure API endpoints to upload and execute malicious binaries on the backup server. Precogs API Security Engine comprehensively audits session boundaries and authorization logic."
What is this vulnerability?
CVE-2016-2004 is categorized as a critical Missing Authentication for Critical Function flaw with a CVSS base score of 9.8. Based on our vulnerability intelligence, this issue occurs when the application fails to securely handle untrusted data boundaries.
HPE Data Protector before 7.03_108, 8.x before 8.15, and 9.x before 9.06 allow remote attackers to execute arbitrary code via unspecified vectors related to lack of authentication. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-2623.
This architectural defect enables adversaries to bypass intended security controls, directly manipulating the application's execution state or data layer. Immediate strategic intervention is required.
Risk Assessment
| Metric | Value |
|---|---|
| CVSS Base Score | 9.8 (CRITICAL) |
| Vector String | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | April 21, 2016 |
| Last Modified | April 12, 2025 |
| Related CWEs | CWE-306 |
Impact on Systems
✅ Unauthorized Data Access: Attackers can bypass authorization controls to access other users' data or administrative endpoints.
✅ Account Takeover: Broken authentication or authorization may enable full account compromise without valid credentials.
✅ API Abuse: Exploiting this vulnerability enables mass data harvesting or destructive operations through unprotected API endpoints.
How to Fix and Mitigate CVE-2016-2004
- Apply Vendor Patches: Upgrade affected components to their latest, non-vulnerable versions immediately.
- Implement Input Validation: Ensure all user-supplied data is validated, sanitized, and type-checked before processing.
- Deploy Runtime Protection: Use Precogs continuous monitoring to detect exploitation attempts in real time.
- Audit Dependencies: Review and update all third-party libraries and transitive dependencies.
Defending with Precogs AI
HPE Data Protector contains an unauthenticated remote code execution vulnerability. Attackers exploit insecure API endpoints to upload and execute malicious binaries on the backup server. Precogs API Security Engine comprehensively audits session boundaries and authorization logic.
Use Precogs to continuously scan your codebase, binaries, APIs, and infrastructure for this vulnerability class and related attack patterns. Our AI-powered detection engine combines static analysis with threat intelligence to identify exploitable weaknesses before attackers do.
Vulnerability Code Signature
Attack Data Flow
| Stage | Detail |
|---|---|
| Source | API Endpoint (REST/GraphQL) |
| Vector | Missing or flawed authorization checks on the requested resource |
| Sink | Direct interaction with database or internal microservice |
| Impact | Unauthorized data access, BOLA/IDOR, Account Takeover |
Vulnerable Code Pattern
// ❌ VULNERABLE: Missing Authorization (BOLA)
app.get('/api/users/:id/data', async (req, res) => {
const userId = req.params.id;
// Taint sink: fetches data for requested ID without verifying ownership
const data = await db.getUserData(userId);
res.json(data);
});
Secure Code Pattern
// ✅ SECURE: Strict Resource Authorization
app.get('/api/users/:id/data', requireAuth, async (req, res) => {
const requestedId = req.params.id;
const authenticatedId = req.user.id;
// Sanitized validation: check ownership
if (requestedId !== authenticatedId && !req.user.isAdmin) {
return res.status(403).json({ error: "Unauthorized access" });
}
const data = await db.getUserData(requestedId);
res.json(data);
});
How Precogs Detects This
Precogs API Security Engine comprehensively audits all exposed endpoints to guarantee strict session validation and resource authorization.\n