#VU6611 Improper input validation in JBoss RESTEasy - CVE-2016-9606

Vulnerability identifier: #VU6611

Vulnerability risk: High

CVSSv4.0: 8.1 [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:U/U:Amber]

CVE-ID: CVE-2016-9606

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
JBoss RESTEasy
Web applications / Other software

Vendor: Red Hat Inc.

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

The weakness exists due to improper parsing of user-supplied requests. A remote attacker can submit a specially crafted request, which when parsed by the YamlProvider feature of the affected application allows to execute arbitrary code with the permissions of the application using RESTEasy.

Successful exploitation of the vulnerability may result in full system compromise.

Mitigation
Update to version 3.1.2 and 3.0.22.

Vulnerable software versions

JBoss RESTEasy: 3.0.0 - 3.1.1

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External links
https://access.redhat.com/security/cve/CVE-2016-9606

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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.