CVE-2017-5493

Description

wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, which makes it easier for remote attackers to bypass intended access restrictions via a crafted (1) site signup or (2) user signup.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.67% Top 20%
Vendor Advisory debian.org Vendor Advisory wordpress.org Vendor Advisory wordpress.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://wpvulndb.com/vulnerabilities/8721
http://www.securityfocus.com/bid/95401 vdb entry
http://www.debian.org/security/2017/dsa-3779 vendor advisory
https://codex.wordpress.org/Version_4.7.1 release notes vendor advisory
http://www.openwall.com/lists/oss-security/2017/01/14/6 third party advisory mailing list
http://www.securitytracker.com/id/1037591 vdb entry
https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4 patch
https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-5493?
CVE-2017-5493 has been scored as a high severity vulnerability.
How to fix CVE-2017-5493?
To fix CVE-2017-5493, 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-2017-5493 being actively exploited in the wild?
It is possible that CVE-2017-5493 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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