A vulnerability has been found in Alkacon OpenCms 10.5.3 and classified as problematic. Affected by this vulnerability is the function gallery of the component SVG Image Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in the gallery function in Alkacon OpenCMS 10.5.3 allows remote attackers to inject arbitrary web script or HTML via a malicious SVG image.

The bug was discovered 03/20/2018. The weakness was published 03/20/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2018-8815 since 03/20/2018. The attack can be launched remotely. The successful exploitation requires a single authentication. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept.

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

The vulnerability is also documented in the vulnerability database at Exploit-DB (44392). Similar entry is available at VDB-114834.

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• Alkacon

Name

• OpenCms

Version

• 10.5.3

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• 🔍

CPE 2.2info

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