CVE-2011-5009

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-12-25 · updated 2026-06-16

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.

Affected products

3Ssoftware Codesys: 3.4-sp4

References

http://aluigi.altervista.org/adv/codesys_1-adv.txt
http://seclists.org/bugtraq/2011/Nov/178
http://secunia.com/advisories/47018
http://www.osvdb.org/77388
http://www.osvdb.org/77389
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-336-01A.pdf
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/47018
http://www.osvdb.org/77388
http://www.osvdb.org/77389

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