Denial of service in WordPress



Published: 2018-02-05 | Updated: 2018-02-09
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-6389
CWE-ID CWE-400
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Subscribe 		WordPress
Web applications / CMS

Vendor WordPress.ORG

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU10376

Risk: Low

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-6389

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the server-side static file loading mechanism due to the way a built-in script in WordPress CMS "load-scripts.php" processes user-defined requests. A remote attacker can send force load-scripts.php to call all possible JavaScript files, consume high CPU and server memory and cause the service to crash.

Mitigation

Update to version 4.9.3.

Vulnerable software versions

WordPress: 3.4.0 - 4.9.2

External links

http://thehackernews.com/2018/02/wordpress-dos-exploit.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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