CVE-2017-17091

Description

wp-admin/user-new.php in WordPress before 4.9.1 sets the newbloguser key to a string that can be directly derived from the user ID, which allows remote attackers to bypass intended access restrictions by entering this string.

Category

8.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 4.71% Top 15%
Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2018/dsa-4090 vendor advisory
https://wpvulndb.com/vulnerabilities/8969 third party advisory vdb entry
https://lists.debian.org/debian-lts-announce/2017/12/msg00019.html mailing list
http://www.securityfocus.com/bid/102024 third party advisory vdb entry
https://codex.wordpress.org/Version_4.9.1 patch release notes
https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326c patch
https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/ release notes

Frequently Asked Questions

What is the severity of CVE-2017-17091?
CVE-2017-17091 has been scored as a high severity vulnerability.
How to fix CVE-2017-17091?
To fix CVE-2017-17091, 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-2017-17091 being actively exploited in the wild?
It is possible that CVE-2017-17091 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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