A vulnerability, which was classified as critical, has been found in libIEC61850 1.4.0. Affected by this issue is the function BerDecoder_decodeUint32 of the file mms/asn1/ber_decode.c. The manipulation of the argument intLen/bufPos with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In libIEC61850 1.4.0, BerDecoder_decodeUint32 in mms/asn1/ber_decode.c has an out-of-bounds read, related to intLen and bufPos.

The weakness was published 12/23/2019. This vulnerability is handled as CVE-2019-19944 since 12/23/2019. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

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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• libIEC61850

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• 1.4.0

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CPE 2.2info

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