CVE-2018-20148

critical

Description

In WordPress before 4.9.9 and 5.x before 5.0.1, contributors could conduct PHP object injection attacks via crafted metadata in a wp.getMediaItem XMLRPC call. This is caused by mishandling of serialized data at phar:// URLs in the wp_get_attachment_thumb_file function in wp-includes/post.php.

References

https://www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/

https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/

https://www.debian.org/security/2019/dsa-4401

https://wpvulndb.com/vulnerabilities/9171

https://wordpress.org/support/wordpress-version/version-5-0-1/

https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/

https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html

https://codex.wordpress.org/Version_4.9.9

https://blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-are

http://www.securityfocus.com/bid/106220

Details

Source: Mitre, NVD

Published: 2018-12-14

Updated: 2019-03-04

Risk Information

CVSS v2

Base Score: 7.5

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

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical