#VU76398 Cross-site scripting in handlebars - CVE-2015-8861

Vulnerability identifier: #VU76398

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-8861

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

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

Vendor: wycats

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. The vulnerability allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that is not quoted.

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

handlebars: before 4.0.0

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External links
https://www.openwall.com/lists/oss-security/2016/04/20/11
https://www.securityfocus.com/bid/96434
https://www.sourceclear.com/blog/handlebars_vulnerability_research_findings/
https://www.tenable.com/security/tns-2016-18

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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.