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CVE-2011-4957

Good to know:

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Date: June 27, 2012

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.

Language: PHP

Severity Score

Related Resources (9)

http://www.openwall.com/lists/oss-security/2012/04/19/6
http://www.debian.org/security/2012/dsa-2470
http://wordpress.org/news/2011/04/wordpress-3-1-1/
https://nvd.nist.gov/vuln/detail/CVE-2011-4957
http://core.trac.wordpress.org/ticket/16892
http://secunia.com/advisories/49138
http://secunia.com/advisories/44038
http://www.openwall.com/lists/oss-security/2012/04/19/17
https://www.mend.io/vulnerability-database/CVE-2011-4957

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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