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Bug #72021 LDAP Escape DN Not RFC 4514 Compliant
Submitted: 2016-04-13 23:56 UTC Modified: 2017-01-10 07:44 UTC
From: chad dot sikorra at gmail dot com Assigned: heiglandreas (profile)
Status: Closed Package: LDAP related
PHP Version: 5.6.20 OS: Linux
Private report: No CVE-ID: None
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From: chad dot sikorra at gmail dot com
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 [2016-04-13 23:56 UTC] chad dot sikorra at gmail dot com
Description:
------------
Per RFC 4514, leading/trailing spaces should be escaped for a DN. Additionally, carriage returns should also be escaped. Currently the ldap_escape method does not doe this. I verified (in Active Directory anyway) that this really is the case, as LDAP refuses to add a LDAP object with a DN passed through the ldap_escape method with a DN flag set when it contains any of the mentioned cases.

https://www.ietf.org/rfc/rfc4514.txt

Test script:
---------------
var_dump(ldap_escape(" Joe,= \rSmith ", null, LDAP_ESCAPE_DN));

Expected result:
----------------
It should output:

'\20Joe\2c\3d \0dSmith\20'

Actual result:
--------------
Currently outputs:

" Joe\2c\3d \rSmith "

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 [2017-01-10 07:44 UTC] heiglandreas@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: heiglandreas
 [2017-01-10 07:44 UTC] heiglandreas@php.net
According to https://github.com/php/php-src/blob/master/ext/ldap/tests/bug72021.phpt this seems to be fixed. 

Current PHP 7.1

PASS Bug #72021 (ldap_escape() with DN flag is not RFC compliant) [ext/ldap/tests/bug72021.phpt]
 
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