Vulnerability CVE-2014-5240
Published: 2014-08-18

Description:
Cross-site scripting (XSS) vulnerability in wp-includes/pluggable.php in WordPress before 3.9.2, when Multisite is enabled, allows remote authenticated administrators to inject arbitrary web script or HTML, and obtain Super Admin privileges, via a crafted avatar URL.

CVSS2 => (AV:N/AC:H/Au:S/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Remote
High
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Wordpress -> Wordpress 
Debian -> Debian linux 

 References:
https://wordpress.org/news/2014/08/wordpress-3-9-2/
https://core.trac.wordpress.org/changeset/29398
http://www.debian.org/security/2014/dsa-3001
http://openwall.com/lists/oss-security/2014/08/13/3
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