PT-2011-5164 · 3S · 3S Codesys

Luigi Auriemma · Published 2011-12-25 · Updated 2017-08-29 · CVE-2011-5009

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions 3S CoDeSys version 3.4 SP4 Patch 2

Description The issue allows remote attackers to cause a denial of service, specifically a NULL pointer dereference, by exploiting the CmpWebServer.dll module in the Control service. This can be achieved through either a crafted Content-Length in an HTTP POST or an invalid HTTP request method.

Recommendations For version 3.4 SP4 Patch 2, consider restricting access to the CmpWebServer.dll module until a patch is available. As a temporary workaround, avoid using invalid HTTP request methods and ensure all HTTP POST requests have a valid Content-Length to minimize the risk of exploitation.

Exploit

Fix

Related Identifiers

CVE-2011-5009

Affected Products

3S Codesys

References · 10

• 🔥 http://us-cert.gov/control_systems/pdf/ICS-ALERT-11-336-01A.pdf · Exploit
• 🔥 https://exploit-db.com/exploits/36378 · Exploit
• 🔥 https://exploit-db.com/exploits/36377 · Exploit
• http://secunia.com/advisories/47018 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-5009 · Security Note
• http://seclists.org/bugtraq/2011/Nov/178 · Note
• http://osvdb.org/77388 · Note
• http://aluigi.altervista.org/adv/codesys_1-adv.txt · Note
• http://osvdb.org/77389 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/71533 · Note