CVE-2017-5493

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.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

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

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
http://www.debian.org/security/2017/dsa-3779
http://www.openwall.com/lists/oss-security/2017/01/14/6	Mailing List Third Party Advisory
http://www.securityfocus.com/bid/95401
http://www.securitytracker.com/id/1037591
https://codex.wordpress.org/Version_4.7.1	Release Notes Vendor Advisory
https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4	Patch
https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/	Vendor Advisory
https://wpvulndb.com/vulnerabilities/8721
http://www.debian.org/security/2017/dsa-3779
http://www.openwall.com/lists/oss-security/2017/01/14/6	Mailing List Third Party Advisory
http://www.securityfocus.com/bid/95401
http://www.securitytracker.com/id/1037591
https://codex.wordpress.org/Version_4.7.1	Release Notes Vendor Advisory
https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4	Patch
https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/	Vendor Advisory
https://wpvulndb.com/vulnerabilities/8721

Configurations

Configuration 1 (hide)

cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2017-01-15 02:59

Updated : 2025-04-20 01:37

NVD link : CVE-2017-5493

Mitre link : CVE-2017-5493

CVE.ORG link : CVE-2017-5493

JSON object : View

Products Affected

wordpress

wordpress

CWE

CWE-338

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

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