Vulnerability Details : CVE-2011-4957
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.
Vulnerability category: Input validationDenial of service
Products affected by CVE-2011-4957
- cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.5:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.5.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.5.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:0.71:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.6:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.11:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.5.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.8:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.0.9:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.5:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.6:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.6.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.6.5:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.7.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.6.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.9:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.9.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.6:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.7:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.4:a:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.9.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.4:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.8.5:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:2.9.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:3.0:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.2.5:a:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.2.4:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:3.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.2.5:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:1.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:3.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:3.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:3.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:3.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:wordpress:wordpress:3.0.6:*:*:*:*:*:*:*
Threat overview for CVE-2011-4957
Top countries where our scanners detected CVE-2011-4957
Top open port discovered on systems with this issue
80
IPs affected by CVE-2011-4957 44
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2011-4957!
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attack surface intelligence
from SecurityScorecard.
Exploit prediction scoring system (EPSS) score for CVE-2011-4957
1.72%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 88 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-4957
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
CWE ids for CVE-2011-4957
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-4957
-
http://www.debian.org/security/2012/dsa-2470
Debian -- Security Information -- DSA-2470-1 wordpress
-
http://www.openwall.com/lists/oss-security/2012/04/19/17
oss-security - Re: CVE-request: WordPress 3.1.1
-
http://core.trac.wordpress.org/ticket/16892
#16892 (make_clickable segfault) – WordPress Trac
-
http://www.openwall.com/lists/oss-security/2012/04/19/6
oss-security - Re: CVE-request: WordPress 3.1.1
-
http://wordpress.org/news/2011/04/wordpress-3-1-1/
News – WordPress 3.1.1 – WordPress.org
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