DBX
Security Engine v4.2.0-stable
99.9% Audit Accuracy

PostgreSQL Function Audit Infrastructure

PostgreSQL Security Definer Risks: Audit Your Functions

Identify dangerous SECURITY DEFINER functions in your PostgreSQL database that could lead to privilege escalation.

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SUPABASENEONPRISMAPOSTGRESRENDER

Technical Audit Procedure

security_definer_audit.sql

Terminal|security_definer_audit.sql

-- Find SECURITY DEFINER functions missing a search_path setting.

1SELECT 
2  proname as function_name, 
3  proconfig 
4FROM pg_proc 
5WHERE prosecdef = true 
6  AND (proconfig IS NULL OR NOT (proconfig @> ARRAY['search_path=public']::text[]));

Market Comparison

Why industry leaders choose DBX Deterministic Audits

FeatureDBX EngineManual AuditLegacy Scanners
Deterministic Path Analysis
Zero-Credential Architecture
Real-time Attack Path Graph
Automatic RLS Validation
Instant Compliance Proof
Copy-Paste Remediation

Technical Deep Dive

In PostgreSQL, a function marked as SECURITY DEFINER executes with the privileges of the user who created it, not the user who calls it. This is a powerful feature, but it's also a common vector for privilege escalation. If a SECURITY DEFINER function doesn't explicitly set a search_path, an attacker can create a malicious object in a different schema and trick the function into executing it with elevated privileges. DBX scans your functions for missing search paths and insecure input handling.

Privilege escalation prevention
Insecure function detection
Automatic remediation scripts
Formal function logic audit

Primary Vulnerability Vectors

  • 01
    Unauthorized superuser access
  • 02
    Arbitrary code execution
  • 03
    Data integrity compromise

Audit Checklist

Audit all SECURITY DEFINER functions for missing search_path
Verify that function owners are not superusers
Check for SQL injection vulnerabilities in dynamic SQL blocks
Validate that input arguments are properly sanitized
Audit execution grants on high-risk security functions

How it works

High-integrity schema introspection

Introspect

Run a read-only script to extract your database catalog. No data ever leaves your machine.

Simulate

Our engine executes billion-path simulations to find logical RLS bypasses.

Remediate

Receive copy-paste SQL fixes for every high-risk vulnerability discovered.

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