CVE-2011-5009

Public Exploit

Description

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.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 25.17% Top 5%

Vendor Advisory secunia.com

Affected: n/a n/a

References

Link	Tags
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-336-01A.pdf	exploit us government resource
http://seclists.org/bugtraq/2011/Nov/178	mailing list
http://secunia.com/advisories/47018	third party advisory vendor advisory
http://aluigi.altervista.org/adv/codesys_1-adv.txt
http://www.osvdb.org/77388	vdb entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/71533	vdb entry
http://www.osvdb.org/77389	vdb entry

Frequently Asked Questions

What is the severity of CVE-2011-5009?: CVE-2011-5009 has been scored as a medium severity vulnerability.
How to fix CVE-2011-5009?: To fix CVE-2011-5009, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-5009 being actively exploited in the wild?: It is possible that CVE-2011-5009 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~25% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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