Vulnerability identifier: #VU35859

Vulnerability risk: Low

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-6588

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Liferay Enterprise Portal
Web applications / CMS

Vendor: Liferay

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

In Liferay Portal before 7.1 CE GA4, an XSS vulnerability exists in the SimpleCaptcha API when custom code passes unsanitized input into the "url" parameter of the JSP taglib call <liferay-ui:captcha url="<%= url %>" /> or <liferay-captcha:captcha url="<%= url %>" />. Liferay Portal out-of-the-box behavior with no customizations is not vulnerable.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Liferay Enterprise Portal: 6.1.0 - 6.1.2, 6.2.0 - 6.2.5, 7.0.0 - 7.0.6, 7.1.0

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External links
http://packetstormsecurity.com/files/153252/Liferay-Portal-7.1-CE-GA4-Cross-Site-Scripting.html
http://dev.liferay.com/web/community-security-team/known-vulnerabilities/liferay-portal-71/-/asset_publisher/7v4O7y85hZMo/content/cst-7130-multiple-xss-vulnerabilities-in-7-1-ce-ga3

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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. However, proof of concept for this vulnerability is available.