Vulnerability identifier: #VU13992

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8034

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Tomcat
Server applications / Web servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to host name verification when using TLS with the WebSocket client was missing. A remote unauthenticated attacker can bypass security restrictions when using TLS.

Mitigation
The vulnerability is addressed in the versions 7.0.90, 9.0.10.

Vulnerable software versions

Apache Tomcat: 9.0.0-M1 - 9.0.9, 7.0.25 - 7.0.88

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External links
http://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.90
http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.10

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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.