WordPress 4.8 plugins.php delete Reflected cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, was found in WordPress 4.8. This affects the function delete of the file plugins.php. Executing a manipulation can lead to cross site scripting (Reflected). This vulnerability appears as CVE-2018-1000556. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in WordPress 4.8 (Content Management System). It has been declared as problematic. This vulnerability affects the function delete of the file plugins.php. The manipulation with an unknown input leads to a cross site scripting vulnerability (Reflected). The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

WordPress version 4.8 + contains a Cross Site Scripting (XSS) vulnerability in plugins.php or core wordpress on delete function that can result in An attacker can perform client side attacks which could be from stealing a cookie to code injection. This attack appear to be exploitable via an attacker must craft an URL with payload and send to the user. Victim need to open the link to be affected by reflected XSS. .

The bug was discovered 04/28/2018. The weakness was presented 06/26/2018 (Website). The advisory is shared for download at pluginvulnerabilities.com. This vulnerability was named CVE-2018-1000556 since 06/22/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/22/2020). The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability was handled as a non-public zero-day exploit for at least 59 days. During that time the estimated underground price was around $5k-$25k. By approaching the search of inurl:plugins.php it is possible to find vulnerable targets with Google Hacking. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13206 (WordPress WP Statistics Plugin Cross-Site Scripting Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Content Management System

Name

• WordPress

Version

• 4.8

License

• open-source

Website

• Product: https://wordpress.com/

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