Yokogawa Centum Vp Entry Class Software up to 5.03.00 Flow BKFSim_vhfd.exe FCS/Test memory corruption

Summaryinfo

A vulnerability described as critical has been identified in Yokogawa Centum Vp Entry Class Software up to 5.03.00. This affects the function FCS/Test of the file BKFSim_vhfd.exe of the component Flow. The manipulation results in memory corruption. This vulnerability is known as CVE-2014-3888. Furthermore, an exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Yokogawa Centum Vp Entry Class Software up to 5.03.00. Affected is the function FCS/Test of the file BKFSim_vhfd.exe of the component Flow. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in BKFSim_vhfd.exe in Yokogawa CENTUM CS 1000, CENTUM CS 3000 R3.09.50 and earlier, CENTUM VP R5.03.20 and earlier, Exaopc R3.72.00 and earlier, B/M9000CS R5.05.01 and earlier, and B/M9000 VP R7.03.01 and earlier, when FCS/Test Function is enabled, allows remote attackers to execute arbitrary code via a crafted packet.

The weakness was published 07/10/2014 (Website). The advisory is shared for download at ics-cert.us-cert.gov. This vulnerability is traded as CVE-2014-3888 since 05/27/2014. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed by Metasploit and been published before and not just after the advisory. The exploit is shared for download at exploit-db.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

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 databases at Exploit-DB (34009) and OSVDB (108756†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Yokogawa

Name

• Centum Vp Entry Class Software

Version

• 5.03

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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