#VU67933 Stored cross-site scripting in Keycloak - CVE-2022-2256

Vulnerability identifier: #VU67933

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-2256

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Keycloak
Server applications / Directory software, identity management

Vendor: Keycloak

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data when handling roles functionality in the admin console. The vulnerability allows a privileged user to inject and execute arbitrary HTML and JavaScript code in victim's browser.

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

Keycloak: 17.0.0 - 19.0.1

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2101942
https://github.com/keycloak/keycloak/security/advisories/GHSA-w9mf-83w3-fv49

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.