ABB RTU500 HCI IEC 60870-5-104 buffer overflow

Summaryinfo

A vulnerability classified as critical was found in ABB RTU500. Impacted is an unknown function of the component HCI IEC 60870-5-104 Handler. Executing a manipulation can lead to buffer overflow. This vulnerability appears as CVE-2022-2502. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in ABB RTU500 (version unknown). It has been declared as problematic. This vulnerability affects an unknown function of the component HCI IEC 60870-5-104 Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability. CVE summarizes:

A vulnerability exists in the HCI IEC 60870-5-104 function included in certain versions of the RTU500 series product. The vulnerability can only be exploited, if the HCI 60870-5-104 is configured with support for IEC 62351-5 and the CMU contains the license feature ‘Advanced security’ which must be ordered separately. If these preconditions are fulfilled, an attacker could exploit the vulnerability by sending a specially crafted message to the RTU500, causing the targeted RTU500 CMU to reboot. The vulnerability is caused by a missing input data validation which eventually if exploited causes an internal buffer to overflow in the HCI IEC 60870-5-104 function.

The weakness was presented 07/26/2023. The advisory is available at search.abb.com. This vulnerability was named CVE-2022-2502 since 07/21/2022. 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 09/25/2024).

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

• ABB

Name

• RTU500

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

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