Cross-site scripting in Ratpack toolkit for JVM web applications

1) Cross-site scripting

EUVDB-ID: #VU24794

Risk: Low

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:Clear]

CVE-ID: CVE-2019-10770

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

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 the development error handler. 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

Ratpack: 0.9.10 - 1.7.5

CPE2.3

• cpe:2.3:a:ratpack:ratpack:0.9.10:*:*:*:*:*:*:*
• cpe:2.3:a:ratpack:ratpack:0.9.11:*:*:*:*:*:*:*
• cpe:2.3:a:ratpack:ratpack:0.9.12:*:*:*:*:*:*:*

External links

https://snyk.io/vuln/SNYK-JAVA-IORATPACK-534882
https://github.com/ratpack/ratpack/commit/a3cbb13be1527874528c3b99fc33517c0297b6d3
https://github.com/ratpack/ratpack/security/advisories/GHSA-r2wf-q3x4-hrv9

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.