Privilege escalation in Trihedral Engineering Limited VTScada

Published: 2017-11-01

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-14029 CVE-2017-14031
CWE-ID	CWE-427 CWE-264
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	VTScada Server applications / SCADA systems
Vendor	Trihedral Engineering Ltd

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Privilege escalation

EUVDB-ID: #VU9079

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2017-14029

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No

Description

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to insecure .dll loading mechanism when opening files. A local attacker can place a file along with specially crafted .dll file and execute arbitrary code on the target system with elevated privileges.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update to version 11.3.05.

Vulnerable software versions

VTScada: 11.3 - 11.3.03

CPE2.3

External links

https://ics-cert.us-cert.gov/advisories/ICSA-17-304-02

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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.

The attacker would have to login to the system and perform certain actions 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) Privilege escalation

EUVDB-ID: #VU9080