Remote code execution in AVEVA InduSoft Web Studio and InTouch Edge HMI

Published: 2018-11-02

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-17916 CVE-2018-17914
CWE-ID	CWE-121 CWE-258
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	InTouch Edge HMI Server applications / SCADA systems AVEVA Edge Server applications / SCADA systems
Vendor	AVEVA Software, LLC.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Stack-based buffer overflow

EUVDB-ID: #VU15700

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-17916

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

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

External links

http://ics-cert.us-cert.gov/advisories/ICSA-18-305-01

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Empty password in configuration file

EUVDB-ID: #VU15701