CVE-2018-20148

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 52.81% Top 5%
Vendor Advisory debian.org Vendor Advisory wordpress.org Vendor Advisory wordpress.org Vendor Advisory wordpress.org Vendor Advisory wpvulndb.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/106220 vdb entry third party advisory
https://wordpress.org/support/wordpress-version/version-5-0-1/ release notes vendor advisory
https://blog.secarma.co.uk/labs/near-phar-dangerous-unserialization-wherever-you-are third party advisory exploit
https://codex.wordpress.org/Version_4.9.9 product vendor advisory
https://wpvulndb.com/vulnerabilities/9171 vendor advisory
https://www.zdnet.com/article/wordpress-vulnerability-affects-a-third-of-most-popular-websites-online/ press/media coverage third party advisory
https://www.debian.org/security/2019/dsa-4401 third party advisory vendor advisory
https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/ release notes vendor advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html third party advisory mailing list
https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/ press/media coverage third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-20148?
CVE-2018-20148 has been scored as a critical severity vulnerability.
How to fix CVE-2018-20148?
To fix CVE-2018-20148, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20148 being actively exploited in the wild?
It is possible that CVE-2018-20148 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~53% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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