CVE-2011-4203
Overview
CVE-2011-4203 is a known-severity vulnerability affecting moodle moodle. It was published on December 22, 2011.
Technical Description
CRLF injection vulnerability in calendar/set.php in the Calendar component in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, 2.1.x before 2.1.3, and 2.2 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via vectors involving the url variable.
Remediation
Check the references section for vendor advisories and patches from moodle. Update moodle to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2011-4203?
CVE-2011-4203 is a known-severity vulnerability affecting moodle moodle. It was published on December 22, 2011.
How severe is CVE-2011-4203?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2011-4203?
Check the references section for vendor advisories and patches from moodle. Update moodle to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2011-4203?
CyberStrike's AI-powered security agents can automatically detect CVE-2011-4203 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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