CVE-2013-4303

Public Exploit

Description

includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of "." (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.51%
Vendor Advisory wikimedia.org Vendor Advisory wikimedia.org
Affected: Wikimedia Foundation MediaWiki
Published at:
Updated at:

References

Link Tags
http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-September/000133.html patch vendor advisory mailing list
http://seclists.org/oss-sec/2013/q3/553 third party advisory mailing list
https://bugzilla.wikimedia.org/show_bug.cgi?id=52746 patch exploit vendor advisory issue tracking
http://www.securityfocus.com/bid/62194 third party advisory vdb entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/86897 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2013-4303?
CVE-2013-4303 has been scored as a medium severity vulnerability.
How to fix CVE-2013-4303?
To fix CVE-2013-4303, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-4303 being actively exploited in the wild?
It is possible that CVE-2013-4303 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2013-4303?
CVE-2013-4303 affects Wikimedia Foundation MediaWiki.
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