A vulnerability, which was classified as critical, has been found in SchoolCMS 2.3.1. Affected by this issue is an unknown function of the file admin.php?m=admin&c=site&a=save of the component Logo Upload Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

SchoolCMS version 2.3.1 allows file upload via the logo upload feature at admin.php?m=admin&c=site&a=save by using the .jpg extension, changing the Content-Type to image/php, and placing PHP code after the JPEG data. This ultimately allows execution of arbitrary PHP code.

The bug was discovered 02/25/2019. The weakness was disclosed 02/26/2019. This vulnerability is handled as CVE-2019-9181 since 02/26/2019. The exploitation is known to be easy. The attack may be launched remotely. The successful exploitation requires a simple authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

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

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• SchoolCMS

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• 2.3.1

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