CMS Made Simple 2.2.8 ModuleManager action.installmodule.php Unserialize code injection

Summaryinfo

A vulnerability classified as critical was found in CMS Made Simple 2.2.8. The affected element is an unknown function of the file action.installmodule.php of the component ModuleManager. The manipulation results in code injection (Unserialize). This vulnerability was named CVE-2019-9061. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in CMS Made Simple 2.2.8 (Content Management System). It has been classified as critical. Affected is an unknown function of the file action.installmodule.php of the component ModuleManager. The manipulation with an unknown input leads to a code injection vulnerability (Unserialize). CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in CMS Made Simple 2.2.8. In the module ModuleManager (in the file action.installmodule.php), it is possible to reach an unserialize call with untrusted input and achieve authenticated object injection by using the "install module" feature.

The bug was discovered 03/06/2019. The weakness was presented 03/26/2019 (Website). The advisory is shared for download at cmsmadesimple.org. This vulnerability is traded as CVE-2019-9061 since 02/23/2019. It is possible to launch the attack remotely. The successful exploitation requires a authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

The vulnerability was handled as a non-public zero-day exploit for at least 20 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:action.installmodule.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-132463, VDB-132464, VDB-132465 and VDB-132466 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Name

• CMS Made Simple

Version

• 2.2.8

License

• open-source

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Once again VulDB remains the best source for vulnerability data.

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