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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.

The vulnerability is caused due to an error in the runtime loader
when parsing received packets and can be exploited to cause a
heap-based buffer overflow via a specially crafted packet sent to
port 2308/TCP.

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/

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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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