#VU15750 Deserialization of untrusted data in JBoss Richfaces - CVE-2018-14667

Vulnerability identifier: #VU15750

Vulnerability risk: High

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2018-14667

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
JBoss Richfaces
Server applications / Frameworks for developing and running applications

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to deserialization of untrusted data. A remote unauthenticated attacker can send a specially crafted UserResource RichFaces expression language that contains a tainted java serialized object org.ajax4jsf.resource.UserResource$UriData expression, trigger deserialization after clearing white list protections and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

JBoss Richfaces: 3.1.0 - 3.3.4

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14667

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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?

Yes. This vulnerability is being exploited in the wild.