var-201109-0223
Vulnerability from variot

Heap-based buffer overflow in the Siemens WinCC Runtime Advanced Loader, as used in SIMATIC WinCC flexible Runtime and SIMATIC WinCC (TIA Portal) Runtime Advanced, allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a crafted packet to TCP port 2308. Siemens SIMATIC WinCC flexible and WinCC (TIA Portal) Runtime Advanced is a software package for virtualization. A security vulnerability exists in the implementation of Siemens SIMATIC WinCC, which can be exploited by malicious users to control the affected system. This vulnerability stems from an error in the runtime loader when parsing a received message, causing a heap buffer overflow through a specially crafted message sent to port 2308/TCP. ----------------------------------------------------------------------

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TITLE: Siemens SIMATIC WinCC Runtime Loader Buffer Overflow Vulnerability

SECUNIA ADVISORY ID: SA46011

VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/46011/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=46011

RELEASE DATE: 2011-09-15

DISCUSS ADVISORY: http://secunia.com/advisories/46011/#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/46011/

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=46011

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 Siemens SIMATIC WinCC, which can be exploited by malicious people to potentially compromise a vulnerable system.

Successful exploitation may allow execution of arbitrary code, but requires that "transfer" mode is enabled (disabled by default).

SOLUTION: Disable "transfer" mode or restrict access to port 2308/TCP.

PROVIDED AND/OR DISCOVERED BY: Billy Rios and Terry McCorkle via ICS-CERT.

ORIGINAL ADVISORY: Siemens: http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=de&objid=29054992&caller=view http://cache.automation.siemens.com/dnl/jI/jI0NDY5AAAA_29054992_FAQ/Siemens_Security_Advisory_SSA-460621_V1_2.pdf

ICS-CERT: http://www.us-cert.gov/control_systems/pdf/ICSA-11-244-01.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.

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