Cross-site scripting in OpenID-Connect-Java-Spring-Server

1) Cross-site scripting

EUVDB-ID: #VU24832

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-2020-5497

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

Exploit availability: Yes

Description

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

The vulnerability exists within the OpenID Connect reference implementation due to insufficient sanitization of user-supplied data in "userInfoJson" in "header.tag". 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 update from vendor's website.

Vulnerable software versions

OpenID-Connect-Java-Spring-Server: 0.9.0 - 1.3.3

CPE2.3

• cpe:2.3:a:the_mitre_corporation_and_mit_kit:openid-connect-java-spring-server:0.9.0:*:*:*:*:*:*:*
• cpe:2.3:a:the_mitre_corporation_and_mit_kit:openid-connect-java-spring-server:0.9.1:*:*:*:*:*:*:*
• cpe:2.3:a:the_mitre_corporation_and_mit_kit:openid-connect-java-spring-server:0.9.2:*:*:*:*:*:*:*

External links

https://github.com/mitreid-connect/OpenID-Connect-Java-Spring-Server/issues/1521

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.