Vulnerability identifier: #VU1093

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2016-5018

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Apache Tomcat
Server applications / Web servers

Vendor: Apache Foundation

Description
The vulnerability allows an application to bypass security manager restrictions on the target system.
The weakness improper access control. By invoking a certain Tomcat utility method, a malicious application can bypass a configured SecurityManager.
Successful exploitation of the vulnerability results in security bypass.

Mitigation
Update to version 6.0.47, 7.0.72, 8.0.37, 8.5.5, 9.0.0.M10.

Vulnerable software versions

Apache Tomcat: 6.0.47, 7.0.72, 8.0.0 RC1 - 8.0.37, 8.5.0 - 8.5.5, 9.0.0-M10

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External links
http://tomcat.apache.org/security-8.html

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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. However, proof of concept for this vulnerability is available.