security-review-owasp-ldap-injection-prevention

LDAP injection prevention requires tracing untrusted input from entry points through normalization and validation to find unsafe interpreter boundaries, then verifying allowlists and canonicalization protect LDAP bind operations and directory lookups from malicious modification.

An LDAP injection trust boundary is the validation checkpoint where untrusted input is sanitized before reaching LDAP queries or bind operations, enforced through allowlists and canonicalization to stop attacker-controlled data from altering directory lookups or privileged object mutations.

Review LDAP injection vulnerabilities by tracing untrusted input-to-sink paths to LDAP queries, evaluating allowlists and canonicalization at trust boundaries, checking privilege boundaries on object mutations, and confirming exploitability with concrete evidence of dynamically built statements.

Input validation with allowlists stops LDAP injection when applied at trust boundaries before dynamic queries execute, but you must also verify canonicalization and trace the complete input-to-sink path to confirm no bypass reaches LDAP bind operations or privileged object mutations.

You can use this LDAP injection review approach for admin consoles and directory lookups because it traces untrusted input through authentication flows and configuration paths where dynamically built LDAP statements, bind operations, and privileged object mutations are constructed.

Allowlist validation limitations for LDAP injection prevention include incomplete canonicalization, misplaced trust boundaries, and input-to-sink paths that bypass validation through object mapping or configuration routes, requiring concrete exploitability evidence to confirm residual risks.