Vulnerability Monitor

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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.

Published

2017-01-15T02:59:03.077

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-338

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	wordpress	wordpress	≤ 4.7	Yes

References

http://www.debian.org/security/2017/dsa-3779 ([email protected])
http://www.openwall.com/lists/oss-security/2017/01/14/6 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/95401 ([email protected])
http://www.securitytracker.com/id/1037591 ([email protected])
https://codex.wordpress.org/Version_4.7.1 Release Notes, Vendor Advisory ([email protected])
https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4 Patch ([email protected])
https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/ Vendor Advisory ([email protected])
https://wpvulndb.com/vulnerabilities/8721 ([email protected])
http://www.debian.org/security/2017/dsa-3779 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2017/01/14/6 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/95401 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1037591 (af854a3a-2127-422b-91ae-364da2661108)
https://codex.wordpress.org/Version_4.7.1 Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4 Patch (af854a3a-2127-422b-91ae-364da2661108)
https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://wpvulndb.com/vulnerabilities/8721 (af854a3a-2127-422b-91ae-364da2661108)