Vulnerability CVE-2017-17091
Published: 2017-12-02

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.

Type:

CWE-330

 (Use of Insufficiently Random Values)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.5/10
6.4/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Wordpress -> Wordpress 

 References:
http://www.securityfocus.com/bid/102024
https://codex.wordpress.org/Version_4.9.1
https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326c
https://lists.debian.org/debian-lts-announce/2017/12/msg00019.html
https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/
https://wpvulndb.com/vulnerabilities/8969
https://www.debian.org/security/2018/dsa-4090
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