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WEB APPLICATION VULNERABILITIES Standard & Premium

WordPress 4.3.x Arbitrary File Deletion Vulnerability (4.3 - 4.3.16)

Description

WordPress is prone to a vulnerability that lets attackers delete arbitrary files because the application fails to properly verify user-supplied input. An attacker can exploit this vulnerability to delete arbitrary files in the context of the webserver process, rendering the website unusable, or even to execute arbitrary code on the webserver. WordPress versions 4.3.x ranging from 4.3 and up to (and including) 4.3.16 are vulnerable.

Remediation

Update to WordPress version 4.3.17 or latest

References

https://blog.ripstech.com/2018/wordpress-file-delete-to-code-execution/

http://blog.vulnspy.com/2018/06/27/Wordpress-4-9-6-Arbitrary-File-Delection-Vulnerbility-Exploit/

https://www.exploit-db.com/exploits/44949/

https://packetstormsecurity.com/files/148333/WordPress-4.9.6-Arbitrary-File-Deletion.html

https://www.wordfence.com/blog/2018/07/details-of-an-additional-file-deletion-vulnerability-patched-in-wordpress-4-9-7/

http://blog.nsfocus.net/wordpress-delete-any-file/

https://codex.wordpress.org/Version_4.3.17

Related Vulnerabilities

WordPress Plugin Falang multilanguage for WordPress Cross-Site Scripting (1.3.17)

WordPress Plugin Accordion Cross-Site Scripting (2.2.29)

WordPress Plugin MDTF-Wordpress Meta Data & Taxonomies Filter Cross-Site Request Forgery (2.2.7.2)

WordPress Plugin WP SVG Icons Cross-Site Request Forgery (3.2.1)

WordPress Plugin WP SlackSync Information Disclosure (1.8.5)

Severity

High

Classification

CVE-2018-12895 CWE-73 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Tags

Missing Update

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