CVE-2018-1000773

HIGH severity · CVSS 8.8 · Improper input validation

8.8CVSS HIGH

Summary

WordPress version 4.9.8 and earlier contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution due to an incomplete fix for CVE-2017-1000600. This attack appears to be exploitable via thumbnail upload by an authenticated user and may require additional plugins in order to be exploited however this has not been confirmed at this time.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredLow

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)28%

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

Affected products we track (1)

WordPress

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
http://www.securityfocus.com/bid/105306Advisory
https://www.theregister.co.uk/2018/08/20/php_unserialisation_wordpress_vuln/Advisory
https://youtu.be/GePBmsNJw6Y?t=1763Advisory
http://www.securityfocus.com/bid/105306Advisory
https://www.theregister.co.uk/2018/08/20/php_unserialisation_wordpress_vuln/Advisory
https://youtu.be/GePBmsNJw6Y?t=1763Advisory