CVE-2011-4957

Description

The make_clickable function in wp-includes/formatting.php in WordPress before 3.1.1 does not properly check URLs before passing them to the PCRE library, which allows remote attackers to cause a denial of service (crash) via a comment with a crafted URL that triggers many recursive calls.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 2.43% Top 20%
Vendor Advisory debian.org Vendor Advisory secunia.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2012/04/19/17 mailing list
http://secunia.com/advisories/44038 third party advisory vendor advisory
http://wordpress.org/news/2011/04/wordpress-3-1-1/
http://core.trac.wordpress.org/ticket/16892
http://secunia.com/advisories/49138 third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2012/04/19/6 mailing list
http://www.debian.org/security/2012/dsa-2470 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2011-4957?
CVE-2011-4957 has been scored as a medium severity vulnerability.
How to fix CVE-2011-4957?
To fix CVE-2011-4957, 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-2011-4957 being actively exploited in the wild?
It is possible that CVE-2011-4957 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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