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WordPress < 4.5 Multiple Vulnerabilities

Medium

Synopsis

The remote server is hosting an outdated installation of WordPress that is affected by multiple vulnerabilities.

Description

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

- A flaw exists that allows a reflected cross-site scripting (XSS) attack. This flaw exists because the '/network/settings.php' script does not validate input to the 'first_comment_author' parameter before returning it to users. This may allow a context-dependent attacker to create a specially crafted request that would execute arbitrary script code in a user's browser session within the trust relationship between their browser and the server. (OSVDB 137859) - A flaw exists related to request handling between a user and a server, where the server can be induced into performing unintended actions (Server Side Request Forgery aka SSRF). By making a crafted request to the 'http.php' script and supplying Octal or Hexedecimal IP addresses, the server can be used to conduct host-based attacks. This may allow an attacker to bypass access restrictions (e.g. host or network ACLs), conduct port scanning of internal networks, enumerate internal hosts, or possibly invoke additional protocols (e.g. Gopher, TFTP) which may give additional control over such requests. (OSVDB 137860) - A flaw exists related to the script compression option as HTTP requests do not require multiple steps, explicit confirmation, or a unique token when performing certain sensitive actions. By tricking a user into following a specially crafted link, a context-dependent attacker can perform a Cross-Site Request Forgery (CSRF / XSRF) attack causing the victim to perform unspecified actions. (OSVDB 137861)

Solution

Upgrade to WordPress 4.5 or later.