DeDeCMS 5.7 SP2 File Upload upload.helper.php litpic unrestricted upload

Summaryinfo

A vulnerability, which was classified as critical, was found in DeDeCMS 5.7 SP2. The affected element is an unknown function of the file /include/helpers/upload.helper.php of the component File Upload. Executing a manipulation of the argument litpic can lead to unrestricted upload. This vulnerability is tracked as CVE-2018-10375. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in DeDeCMS 5.7 SP2 (Content Management System) and classified as critical. This vulnerability affects some unknown functionality of the file /include/helpers/upload.helper.php of the component File Upload. The manipulation of the argument litpic with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A file uploading vulnerability exists in /include/helpers/upload.helper.php in DedeCMS V5.7 SP2, which can be utilized by attackers to upload and execute arbitrary PHP code via the /dede/archives_do.php?dopost=uploadLitpic litpic parameter when "Content-Type: image/jpeg" is sent, but the filename ends in .php and contains PHP code.

The bug was discovered 04/24/2018. The weakness was disclosed 04/25/2018 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-10375 since 04/25/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1608.002.

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. By approaching the search of inurl:include/helpers/upload.helper.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.

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Productinfo

Type

• Content Management System

Name

• DeDeCMS

Version

• 5.7 SP2

License

• commercial

CPE 2.3info

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CPE 2.2info

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