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Concrete5 5.7.4 SQL Injection

Concrete5 5.7.4 SQL Injection
Posted Jun 12, 2015
Authored by EgiX

Concrete5 versions 5.7.4 and below suffer from a remote SQL injection vulnerability.

tags | exploit, remote, sql injection
MD5 | a86a67533b104a9a04ac54e69e6dbc4c

Concrete5 5.7.4 SQL Injection

Change Mirror Download
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Concrete5 <= 5.7.4 (Access.php) SQL Injection Vulnerability
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[-] Software Link:

https://www.concrete5.org/


[-] Affected Versions:

Version 5.7.3.1, 5.7.4, and probably other versions.


[-] Vulnerability Description:

The vulnerable code is located in /concrete/src/Permission/Access/Access.php:

168. protected function buildAssignmentFilterString($accessType, $filterEntities)
169. {
170. $peIDs = '';
171. $filters = array();
172. if (count($filterEntities) > 0) {
173. foreach ($filterEntities as $ent) {
174. $filters[] = $ent->getAccessEntityID();
175. }
176. $peIDs .= 'and peID in (' . implode($filters, ',') . ')';
177. }
178. if ($accessType == 0) {
179. $accessType = '';
180. } else {
181. $accessType = ' and accessType = ' . $accessType;
182. }

The Access::buildAssignmentFilterString() method uses its $accessType parameter to construct a SQL query
without a proper validation at line 181. This can be exploited to inject and execute arbitrary SQL commands.
Successful exploitation of this vulnerability requires an account with privileges to edit page permissions.


[-] Solution:

Update to version 5.7.4.1 or later.


[-] Disclosure Timeline:

[05/05/2015] - Vulnerability details sent through HackerOne
[12/05/2015] - Vendor said a patch has been committed and will be available in the next version
[12/05/2015] - Version 5.7.4.1 released along with the patch for this vulnerability
[11/06/2015] - Vulnerability publicly disclosed on HackerOne
[11/06/2014] - CVE number requested
[11/06/2014] - Publication of this advisory


[-] CVE Reference:

The Common Vulnerabilities and Exposures project (cve.mitre.org) has not assigned a name to this vulnerability yet.


[-] Credits:

Vulnerability discovered by Egidio Romano of Minded Security.


[-] Original Advisory:

http://karmainsecurity.com/KIS-2015-03


[-] Other References:

https://hackerone.com/reports/59664
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