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pam_ldap -- authentication bypass vulnerability


Luke Howard reports:

If a pam_ldap client authenticates against an LDAP server that returns a passwordPolicyResponse control, but omits the optional "error" field of the PasswordPolicyResponseValue, then the LDAP authentication result will be ignored and the authentication step will always succeed.



portaudit: pam_ldap -- authentication bypass vulnerability

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Oliver Eikemeier <>