Vulnerability identifier: #VU1190

Vulnerability risk: High

CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MODX Evolution
Web applications / CMS

Vendor: MODX

Description

The vulnerability allows a remote attacker to execute arbitrary SQL commands.

The vulnerability exists due to insufficient sanitization of user-supplied input passed via the "ucfg" HTTP POST parameter to "/assets/snippets/ajaxSearch/classes/ajaxSearchConfig.class.inc.php" script. A remote attacker can send a specially crafted HTTP POST request and execute arbitrary SQL commands in database.

Successful exploitation of this vulnerability may allow an attacker to execute arbitrary PHP code on the target system, however requires valid user account.

Note: as of November 30, 2016 this vulnerability is being actively exploited in the wild.

Mitigation
Apply a security fix:
http://extras.evolution-cms.com/packages/core/security-fix.html

Vulnerable software versions

MODX Evolution: 1.0.12 - 1.1.0

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External links
http://forums.modx.com/thread/101240/evo-security-patch-1-0-12-and-above#dis-post-546368

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.