#VU96 Out-of-bounds read in VTScada - CVE-2016-4523

Vulnerability identifier: #VU96

Vulnerability risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2016-4523

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
VTScada
Server applications / SCADA systems

Vendor: Trihedral Engineering Ltd

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists within the handling of Wireless Application Protocol requests. A remote unauthenticated attacker can cause the software to be read outside the intended buffer, which may lead to a crash.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Trihedral Engineering Ltd. has created an updated software version 11.2.02, available at:

ftp://ftp.trihedral.com/VTS/

Vulnerable software versions

VTScada: 9 - 11.1

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External links
https://ics-cert.us-cert.gov/advisories/ICSA-16-159-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.