NULL pointer dereference in CODESYS - CVE-2011-5009
Published: December 25, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44426
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-5009
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via (1) a crafted Content-Length in an HTTP POST or (2) an invalid HTTP request method.
Affected software
CODESYS
How to mitigate CVE-2011-5009
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Links to Public Exploits and PoC-codes
External 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