#VU35944 Permissions, Privileges, and Access Controls in JBoss Enterprise Application Platform - CVE-2019-3894

Vulnerability identifier: #VU35944

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-3894

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
JBoss Enterprise Application Platform
Server applications / Application servers

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

It was discovered that the ElytronManagedThread in Wildfly's Elytron subsystem in versions from 11 to 16 stores a SecurityIdentity to run the thread as. These threads do not necessarily terminate if the keep alive time has not expired. This could allow a shared thread to use the wrong security identity when executing.

Mitigation
Install update from vendor's website.

Vulnerable software versions

JBoss Enterprise Application Platform: 7.0.0

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External links
https://access.redhat.com/errata/RHSA-2019:1106
https://access.redhat.com/errata/RHSA-2019:1107
https://access.redhat.com/errata/RHSA-2019:1108
https://access.redhat.com/errata/RHSA-2019:1140
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3894
https://security.netapp.com/advisory/ntap-20190517-0004/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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