var-201207-0137
Vulnerability from variot

Siemens SIMATIC S7-400 PN CPU devices with firmware 6 before 6.0.3 allow remote attackers to cause a denial of service (defect-mode transition and service outage) via crafted ICMP packets. Siemens SIMATIC is an automation software in a single engineering environment. There is a security hole in SIEMENS SIMATIC S7-400. Since the Ethernet port on the SIMATIC S7-400 V6 receives a malformed IP packet, the device enters the Defect mode. The SIMATIC S7-400 V6 CPU defect mode locks the unit and therefore cannot be processed for process control. The attacker can exploit this vulnerability. Conduct a denial of service attack. SIEMENS SIMATIC S7-400 is prone to multiple denial-of-service vulnerabilities. Remote attackers may exploit this issue to cause denial-of-service conditions, denying service to legitimate users. ----------------------------------------------------------------------

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TITLE: Siemens SIMATIC S7-400 Products ICMP Processing Denial of Service Vulnerability

SECUNIA ADVISORY ID: SA50115

VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/50115/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=50115

RELEASE DATE: 2012-07-31

DISCUSS ADVISORY: http://secunia.com/advisories/50115/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s)

http://secunia.com/advisories/50115/

ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=50115

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION: A vulnerability has been reported in some Siemens SIMATIC S7-400 products, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is reported in firmware versions 6.0.1 and 6.0.2 in the following products: * CPU 412-2 PN (6ES7412-2EK06-0AB0) * CPU 414-3 PN/DP (6ES7414-3EM06-0AB0) * CPU 414F-3 PN/DP (6ES7414-3FM06-0AB0) * CPU 416-3 PN/DP (6ES7416-3ES06-0AB0) * CPU 416F-3 PN (6ES7416-3FS06-0AB0)

SOLUTION: Update to firmware version 6.0.3 (please see the vendor's advisory for more information).

PROVIDED AND/OR DISCOVERED BY: The vendor credits ICS-CERT.

ORIGINAL ADVISORY: SSA-589272: http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-589272.pdf

OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/

DEEP LINKS: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/

EXPLOIT: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/

About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities.

Subscribe: http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/

Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor.

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