#VU14267 Information disclosure in Keycloak - CVE-2017-2582

Vulnerability identifier: #VU14267

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-2582

CWE-ID: CWE-200

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 obtain potentially sensitive information.

The vulnerability exists in the StaxParserUtil class of the Picketlink feature due to improper parsing of Security Assertion Markup Language (SAML) messages. A remote attacker can send a specially crafted SAML request that submits malicious input and access sensitive information, such as values of system properties.

Mitigation
Update to version 2.5.1.

Vulnerable software versions

Keycloak: 2.0.0 - 2.5.0

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External links
https://github.com/keycloak/keycloak/pull/3715/commits/0cb5ba0f6e83162d221681f47b470c3042eef237

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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.