#VU13992 Security restrictions bypass in Apache Tomcat - CVE-2018-8034

Vulnerability identifier: #VU13992

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

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: 7.0.25 - 7.0.88, 9.0.0-M1 - 9.0.9

---

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

---

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.