--- title: "CVE-2011-4586\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2011-4586?format=md keywords: index, follow --- # CVE-2011-4586 Publication date 20 July 2012 Last updated 24 July 2024 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## Description CRLF injection vulnerability in calendar/set.php in the Calendar subsystem in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | moodle | 13.10 saucy | Not affected | | 13.04 raring | Not affected | | 12.10 quantal | Not affected | | 12.04 LTS precise | Not affected | | 11.10 oneiric | Ignored end of life | | 11.04 natty | Ignored end of life | | 10.10 maverick | Ignored end of life | | 10.04 LTS lucid | Ignored end of life | | 8.04 LTS hardy | Ignored end of life | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2011-4586?format=md#patch-details) ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | moodle | * Other: | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4586) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-4586) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-4586) * [Debian](https://security-tracker.debian.org/tracker/CVE-2011-4586) ### Other references *