Multiple vulnerabilities in Red Hat Keycloak



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2017-2582
CVE-2017-2646
CWE-ID CWE-200
CWE-835
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Keycloak
Server applications / Directory software, identity management

Vendor Keycloak

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU14267

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 - Information exposure

Exploit availability: No

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

CPE2.3 External links

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


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Infinite loop

EUVDB-ID: #VU14268

Risk: Low

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

CVE-ID: CVE-2017-2646

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability existsdue to improper processing of logout requests that contain an extension element. A remote attacker can send a specially crafted logout request that submits malicious input, make the SAMLSloRequestParser.parse() method end in an infinite loop and cause the service to crash.

Mitigation

Update to version 2.5.5.

Vulnerable software versions

Keycloak: 2.0.0 - 2.5.4

CPE2.3 External links

https://access.redhat.com/security/cve/cve-2017-2646


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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