#VU70169 Path traversal in Keycloak - CVE-2022-3782

Vulnerability identifier: #VU70169

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-3782

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

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

Vendor: Keycloak

Description

The vulnerability allows a remote attacker to perform path traversal attacks.

The vulnerability exists due to insufficient validation of URLs included in a redirect. A remote attacker can construct a malicious request to bypass validation by using double encoding, access other URLs and potentially sensitive information within the domain.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Keycloak: 1.0 - 19.0.3, 20.0.0

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External links
https://github.com/keycloak/keycloak/security/advisories/GHSA-g8q8-fggx-9r3q

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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.