National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-5493 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink 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

Technical Details

Vulnerability Type (View All)

  • Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CWE-338)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
4.7


Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-5493
NVD Published Date:
01/14/2017
NVD Last Modified:
10/02/2019