WordPress 4.5.x < 4.6 Multiple Vulnerabilities

medium Nessus Network Monitor Plugin ID 9949
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Synopsis

The remote server is hosting an outdated installation of WordPress that is affected by multiple vulnerabilities.

Description

Versions of WordPress 4.5.x prior to 4.6 are affected by multiple vulnerabilities :

- A path traversal vulnerability exists in the WordPress Admin API in the 'wp_ajax_update_plugin()' function in 'ajax-actions.php' due to improper sanitization of user-supplied input. An authenticated, remote attacker can exploit this, via a specially crafted request, to cause a denial of service condition. (CVE-2016-6896)
- A cross-site request forgery vulnerability (CSRF/XSRF) exists in the 'admin-ajax.php' script due to a failure to require multiple steps, explicit confirmation, or a unique token when performing certain sensitive actions. An unauthenticated, remote attacker can exploit this, by convincing a user to follow a specially crafted link, to perform arbitrary AJAX updates. (CVE-2016-6897)
- An information disclosure vulnerability exists in the 'wp_ajax_update_plugin()' function in the 'ajax-actions.php' script due to performing a call to 'get_plug_data()' before checking capabilities. An authenticated, remote attacker can exploit this to bypass intended read-access restrictions, resulting in a disclosure of sensitive information. (CVE-2016-10148)

Solution

Upgrade to WordPress 4.6 or later.

See Also

https://wordpress.org/news/2016/08/pepper

http://seclists.org/fulldisclosure/2016/Aug/98

Plugin Details

Severity: Medium

ID: 9949

Family: CGI

Published: 2/9/2017

Updated: 3/6/2019

Dependencies: 9036

Nessus ID: 93111

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 6

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

Patch Publication Date: 8/16/2016

Vulnerability Publication Date: 8/20/2016

Reference Information

CVE: CVE-2016-6896, CVE-2016-6897, CVE-2016-10148

BID: 92572, 92573