#VU41396 Cross-site scripting in WordPress and Debian Linux - CVE-2014-5240

Vulnerability identifier: #VU41396

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-5240

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS
Debian Linux
Operating systems & Components / Operating system

Vendor: WordPress.ORG
Debian

Description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in wp-includes/pluggable.php in WordPress before 3.9.2, when Multisite is enabled,. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

WordPress: 3.0 - 3.0.6, 3.1 - 3.1.4, 3.2 - 3.2.1, 3.3 - 3.3.3, 3.4.0 - 3.4.2, 3.5.0 - 3.5.1, 3.6 - 3.6.1, 3.7 - 3.7.1, 3.8 - 3.8.1, 3.9.0

Debian Linux: 3.0 - 7.0

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External links
https://openwall.com/lists/oss-security/2014/08/13/3
https://www.debian.org/security/2014/dsa-3001
https://core.trac.wordpress.org/changeset/29398
https://wordpress.org/news/2014/08/wordpress-3-9-2/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.