Vulnerability identifier: #VU21735

Vulnerability risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11688

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Openfire
Web applications / Modules and components for CMS

Vendor: Ignite Realtime

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in 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
Install updates from vendor's website.

Vulnerable software versions

Openfire: 3.7.0 - 3.9.1

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External links
http://packetstormsecurity.com/files/148057/Ignite-Realtime-Openfire-3.7.1-Cross-Site-Scripting.html
http://seclists.org/fulldisclosure/2018/Jun/13
http://seclists.org/fulldisclosure/2018/Jun/24
http://www.securityfocus.com/archive/1/542060/100/0/threaded
http://github.com/igniterealtime/Openfire/commit/ed3492a24274fd454afe93a499db49f3d6335108#diff-3f607cf668ad8f1091e789a2c1dca32a
http://github.com/igniterealtime/Openfire/compare/v3.9.1...v3.9.2

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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.