Exponent CMS up to 2.3.7 Patch 2 install/index.php sc code injection

Summaryinfo

A vulnerability identified as critical has been detected in Exponent CMS up to 2.3.7 Patch 2. This issue affects some unknown processing of the file install/index.php. The manipulation of the argument sc leads to code injection. This vulnerability is referenced as CVE-2016-2242. Remote exploitation of the attack is possible. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Exponent CMS up to 2.3.7 Patch 2 (Content Management System). This issue affects some unknown functionality of the file install/index.php. The manipulation of the argument sc with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Exponent CMS 2.x before 2.3.7 Patch 3 allows remote attackers to execute arbitrary code via the sc parameter to install/index.php.

The bug was discovered 02/03/2016. The weakness was published 01/23/2017 as File 135721/Exp (Packetstorm). The advisory is shared at packetstormsecurity.com. The identification of this vulnerability is CVE-2016-2242 since 02/07/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 355 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:install/index.php it is possible to find vulnerable targets with Google Hacking.

Applying the patch 2.3.7 Patch 3 is able to eliminate this problem.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• Exponent

Name

• CMS

Version

• 2.3.7 Patch 2

License

• open-source

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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