Cross-site scripting (XSS) vulnerability in Plupload.as in Moxiecode plupload before 1.5.5, as used in WordPress before 3.5.1 and other products, allows remote attackers to inject arbitrary web script or HTML via the id parameter.

Versions of WordPress prior to 3.5.1 are susceptible to the following vulnerabilities :

 - A flaw exists that may allow a remote attacker to use the site to gain information.  The issue is due to the 'xmlrpc.php' script 'pingback.ping' method not being restricted to specific sites or IP ranges.  With a crafted request, an attacker can request 'pingbacks' from internal or external hosts, effectively using the feature to conduct proxied port scans. (CVE-2013-0235)
 - A flaw exists that allows multiple remote cross-site scripting (XSS) attacks.  This flaw exists because the application does not validate certain unspecified input related to Shortcodes or Post Content before returning it to the user.  This may allow an attacker to create a specially crafted request that would execute arbitrary script code in a user's browser within the trust relationship between their browser and the server. (CVE-2013-0236)
 - The plupload external library contains a flaw that allows a remote cross-site scripting (XSS) attack.  This flaw exists because the application does not validate certain unspecified input before returning it to the user. This may allow an attacker to create a specially crafted request that would execute arbitrary script code in a user's browser within the trust relationship between their browser and the server. (CVE-2013-0237)

According to its version number, the WordPress install hosted on the remote web server is affected by multiple vulnerabilities :

  - The application is affected by a server-side request     forgery vulnerability in the 'pingback.ping' method     used in 'xmlrpc.php'. This vulnerability can be used to     expose information and remotely port scan a host using     pingbacks. (CVE-2013-0235)

  - The application is affected by two instances of     cross-site scripting (XSS) attacks via shortcodes and     post content. (CVE-2013-0236)

  - The application is affected by a cross-site scripting     (XSS) vulnerability in the Plupload external library.
    (CVE-2013-0237)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Wordpress reports :

WordPress 3.5.1 also addresses the following security issues :

- A server-side request forgery vulnerability and remote port scanning using pingbacks. This vulnerability, which could potentially be used to expose information and compromise a site, affects all previous WordPress versions. This was fixed by the WordPress security team.
We'd like to thank security researchers Gennady Kovshenin and Ryan Dewhurst for reviewing our work.

- Two instances of cross-site scripting via shortcodes and post content. These issues were discovered by Jon Cave of the WordPress security team.

- A cross-site scripting vulnerability in the external library Plupload. Thanks to the Moxiecode team for working with us on this, and for releasing Plupload 1.5.5 to address this issue.

ID	Name	Product	Family	Severity
9095	WordPress < 3.5.1 Multiple Vulnerabilities	Nessus Network Monitor	CGI	medium
64452	WordPress < 3.5.1 Multiple Vulnerabilities	Nessus	CGI abuses	medium
64288	FreeBSD : wordpress -- multiple vulnerabilities (559e00b7-6a4d-11e2-b6b0-10bf48230856)	Nessus	FreeBSD Local Security Checks	medium

Detections

Analytics

CVE-2013-0237

medium

Tenable Plugins

medium

medium

medium