Siemens COMOS Generic Data Mapper xml external entity reference

Summaryinfo

A vulnerability labeled as problematic has been found in Siemens COMOS. This affects an unknown part of the component Generic Data Mapper/the Engineering Adapter/the Engineering Interface. Executing a manipulation can lead to xml external entity reference. This vulnerability is tracked as CVE-2024-49704. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Siemens COMOS (the affected version unknown). This vulnerability affects an unknown part of the component Generic Data Mapper/the Engineering Adapter/the Engineering Interface. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in COMOS V10.3 (All versions < V10.3.3.5.8), COMOS V10.4.0 (All versions), COMOS V10.4.1 (All versions), COMOS V10.4.2 (All versions), COMOS V10.4.3 (All versions < V10.4.3.0.47), COMOS V10.4.4 (All versions < V10.4.4.2), COMOS V10.4.4.1 (All versions < V10.4.4.1.21). The Generic Data Mapper, the Engineering Adapter, and the Engineering Interface improperly handle XML External Entity (XXE) entries when parsing configuration and mapping files. This could allow an attacker to extract any file with a known location on the user's system or accessible network folders by persuading a user to use a maliciously crafted configuration or mapping file in one of the affected components.

The advisory is available at cert-portal.siemens.com. This vulnerability was named CVE-2024-49704 since 10/17/2024. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 12/10/2024).

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

• Siemens

Name

• COMOS

License

• commercial

Website

• Vendor: https://www.siemens.com/

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