#VU6192 DDL hijacking in SIMATIC STEP 7 and SIMATIC PCS 7 - CVE-2012-3015
Published: April 5, 2017
Vulnerability identifier: #VU6192
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2012-3015
CWE-ID: CWE-426
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
SIMATIC STEP 7
SIMATIC PCS 7
SIMATIC STEP 7
SIMATIC PCS 7
Software vendor:
Siemens
Siemens
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to insecure DDL loading mechanism when processing STEP 7 files in SIMATIC STEP 7 and SIMATIC PCS 7 software. A remote attacker can trick the victim into opening a SETP 7 file from a remote SMB or WebDAV share, which hosts malicious .dll file, and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Note: the vulnerability has been exploited in the wild by Stuxnet malware in 2010.
Remediation
Install updates from vendor's website.