CVE-2011-5009

The CmpWebServer.dll module in the Control service in 3S CoDeSys 3.4 SP4 Patch 2 allows remote attackers to cause a denial of service (NULL pointer dereference) via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.

• http://aluigi.altervista.org/adv/codesys_1-adv.txt
• http://seclists.org/bugtraq/2011/Nov/178
• http://secunia.com/advisories/47018Vendor Advisory
• http://www.osvdb.org/77388
• http://www.osvdb.org/77389
• http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-336-01A.pdfExploit, US Government Resource
• https://exchange.xforce.ibmcloud.com/vulnerabilities/71533
• http://aluigi.altervista.org/adv/codesys_1-adv.txt
• http://seclists.org/bugtraq/2011/Nov/178
• http://secunia.com/advisories/47018Vendor Advisory
• http://www.osvdb.org/77388
• http://www.osvdb.org/77389
• http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-336-01A.pdfExploit, US Government Resource
• https://exchange.xforce.ibmcloud.com/vulnerabilities/71533

Published

Dec 25, 2011

Last Modified

Jun 16, 2026

Status

Modified

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