Siemens SCALANCE XR-500 SSL allocation of resources

Summaryinfo

A vulnerability was found in Siemens SCALANCE M-800, SCALANCE W-1700, SCALANCE W-700, SCALANCE XB-200, SCALANCE XC-200, SCALANCE XF-200BA, SCALANCE XM-400, SCALANCE XP-200, SCALANCE XR-300WG and SCALANCE XR-500. It has been declared as problematic. This vulnerability affects unknown code of the component SSL Handler. Executing a manipulation can lead to allocation of resources. The identification of this vulnerability is CVE-2022-36324. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Siemens SCALANCE M-800, SCALANCE W-1700, SCALANCE W-700, SCALANCE XB-200, SCALANCE XC-200, SCALANCE XF-200BA, SCALANCE XM-400, SCALANCE XP-200, SCALANCE XR-300WG and SCALANCE XR-500. It has been declared as problematic. This vulnerability affects some unknown processing of the component SSL Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

Affected devices do not properly handle the renegotiation of SSL/TLS parameters. This could allow an unauthenticated remote attacker to bypass the TCP brute force prevention and lead to a denial of service condition for the duration of the attack.

The weakness was shared 08/10/2022 as ssa-710008. The advisory is shared for download at cert-portal.siemens.com. This vulnerability was named CVE-2022-36324 since 07/20/2022. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/14/2026). The MITRE ATT&CK project declares the attack technique as T1499.

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

Vendor

• Siemens

Name

• SCALANCE M-800
• SCALANCE W-700
• SCALANCE W-1700
• SCALANCE XB-200
• SCALANCE XC-200
• SCALANCE XF-200BA
• SCALANCE XM-400
• SCALANCE XP-200
• SCALANCE XR-300WG
• SCALANCE XR-500

License

• commercial

Website

• Vendor: https://www.siemens.com/

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