CVE-2017-5493
HIGH severity · CVSS 7.5 · CWE-338
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactHigh
Availability impactNone
Exploit probability (EPSS)3%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4 ↗
Additional information
- NVD record
- https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4Patch
- https://codex.wordpress.org/Version_4.7.1Advisory
- https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/Advisory
- http://www.debian.org/security/2017/dsa-3779
- http://www.openwall.com/lists/oss-security/2017/01/14/6Advisory
- http://www.securityfocus.com/bid/95401
- http://www.securitytracker.com/id/1037591
- https://wpvulndb.com/vulnerabilities/8721