LDAP Injection Attack

Anandhu Krishnan
Published on
13 May 2024


LDAP Injection vulnerabilities may allow attackers to bypass authentication controls and access or manipulate arbitrary data within the LDAP directory.


To prevent LDAP Injection, validate and/or escape all user inputs before incorporating them into LDAP queries. Specifically, deny list the following characters or combinations: &! < > = ~= >= <= * ( ) , + - “ ‘ ; \ / NUL character.
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Written by
Anandhu Krishnan
Anandhu Krishnan
Lead Engineer
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