Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-4w8m-96v9-2c86
Advisory ID github_osv/GHSA-4w8m-96v9-2c86
Aliases CVE-2011-4203
Summary Moodle CRLF Injection Vulnerability in Calendar Component 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.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
System Score Found at
generic_textual MODERATE
Reference id Reference type URL
http://penturalabs.wordpress.com/2011/12/13/advisory-crlf-injection-vulnerability-in-moodle
https://github.com/moodle/moodle
https://github.com/moodle/moodle/commit/581e8dba387f090d89382115fd850d8b44351526
https://github.com/moodle/moodle/commit/ae7cc577b7115a7ad7a68dc4986aca9e2bda2cf5
https://github.com/moodle/moodle/commit/bc577df6a974606fcb0882b090b00ea5a4e10cf6
https://github.com/moodle/moodle/commit/e311b14364719b0f7851149ee51c1a4ec732635e
https://moodle.org/mod/forum/discuss.php?d=191754
CVE-2011-4203 https://nvd.nist.gov/vuln/detail/CVE-2011-4203
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
There are no known vectors.

There are no SSVC decisions available.