CVE-2013-0675 in SIMATIC PCS7
Summary
by MITRE
Buffer overflow in CCEServer (aka the central communications component) in Siemens WinCC before 7.2, as used in SIMATIC PCS7 before 8.0 SP1 and other products, allows remote attackers to cause a denial of service via a crafted packet.
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Analysis
by VulDB Data Team • 01/01/2022
The vulnerability identified as CVE-2013-0675 represents a critical buffer overflow condition within the CCEServer component of Siemens WinCC software, a widely deployed industrial control system platform. This flaw exists in the central communications server that facilitates communication between various components of the SIMATIC PCS7 system and other Siemens products. The buffer overflow occurs when the server processes specially crafted network packets, creating a potential entry point for malicious actors to exploit the system's communication infrastructure.
The technical implementation of this vulnerability stems from insufficient input validation within the CCEServer's packet processing routines. When the server receives malformed or oversized data packets, it fails to properly bounds-check the incoming data before copying it into fixed-size memory buffers. This classic buffer overflow scenario allows attackers to overwrite adjacent memory locations, potentially leading to arbitrary code execution or system instability. The vulnerability specifically affects Siemens WinCC versions prior to 7.2 and SIMATIC PCS7 versions prior to 8.0 SP1, indicating a significant portion of industrial control systems remained exposed to this risk for extended periods.
The operational impact of this vulnerability extends beyond simple denial of service conditions, though that remains a primary concern. Remote attackers capable of sending malicious packets to the affected systems could potentially cause complete system crashes, leading to production halts and operational disruptions in critical infrastructure environments. The implications are particularly severe in industrial settings where continuous operation is essential, as any disruption could result in financial losses, safety hazards, or environmental impacts. This vulnerability undermines the reliability and security posture of industrial control systems, making them susceptible to targeted attacks that could escalate beyond simple service disruption.
Mitigation strategies for CVE-2013-0675 should prioritize immediate software updates to the affected versions of Siemens WinCC and SIMATIC PCS7, specifically upgrading to versions 7.2 and 8.0 SP1 respectively. Network segmentation and perimeter controls should be implemented to limit access to the affected systems, particularly restricting communication to trusted networks and implementing strict firewall rules that monitor and filter incoming packets to the CCEServer component. Organizations should also conduct comprehensive vulnerability assessments to identify all systems running affected software versions and establish monitoring protocols to detect potential exploitation attempts. The vulnerability aligns with CWE-121, which categorizes buffer overflow conditions, and represents a typical attack vector that could be mapped to ATT&CK technique T1190 for exploiting vulnerabilities in remote services. Regular security assessments and patch management programs are essential to prevent similar vulnerabilities from compromising industrial control system integrity.