Zero-day Vulnerability Database

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Zero-day vulnerabilities discovered: 1

Two vulnerabilities in Siemens SIMATIC WinCC
CVE-2014-8551

Improper input validation

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to improper input validation when processing packets sent to the WinCC server. A remote unauthenticated attacker can send a specially crafted packet and execute arbitrary code on the target system.

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

Note: this vulnerability has been exploited in targeted attacks.

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The vulnerability has been exploited in targeted attacks involving BlackEnergy Trojan.

Software: Siemens SIMATIC WinCC

Known/fameous malware:

BlackEnergy

The vulnerability has been exploited in targeted attacks involving BlackEnergy Trojan.

Links:

http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-134508.pdf
https://ics-cert.us-cert.gov/advisories/ICSA-14-329-02D

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About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.