#VU15700 Stack-based buffer overflow in InTouch Edge HMI and AVEVA Edge - CVE-2018-17916

Vulnerability identifier: #VU15700

Vulnerability risk: High

CVSSv4.0: 8.1 [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:U/U:Amber]

CVE-ID: CVE-2018-17916

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
InTouch Edge HMI
Server applications / SCADA systems
AVEVA Edge
Server applications / SCADA systems

Vendor: AVEVA Software, LLC.

Description

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

The vulnerability exists due to stack-based buffer overflow vulnerability during tag, alarm, or event related actions such as read and write. A remote unauthenticated attacker can send a carefully crafted packet to invoke an arbitrary process and execute arbitrary code with elevated privileges.

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

Mitigation
Update InduSoft Web Studio version 8.1 SP2.
Update InTouch Edge HMI to version 2017 SP2.

Vulnerable software versions

InTouch Edge HMI: before 2017 SP2

AVEVA Edge: before 8.1 SP2

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External links
https://ics-cert.us-cert.gov/advisories/ICSA-18-305-01

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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?

No. We are not aware of malware exploiting this vulnerability.