Vulnerability identifier: #VU10707

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-2018-1304

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 weakness exists due to the URL pattern of "" (the empty string) which exactly maps to the context root was not correctly handled when used as part of a security constraint definition. A remote attacker can supply a specially crafted URL, bypass security restrictions and gain unauthorised access to web application resources.

Mitigation
Update to version 7.0.85, 8.0.50, 8.5.28, 9.0.5.

Vulnerable software versions

Apache Tomcat: 9.0.0-M1 - 9.0.4, 7.0.0 - 7.0.84, 8.0.0 - 8.0.49, 8.5.0 - 8.5.24

---

External links
http://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.85
http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.0.50
http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.28
http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.5

---

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.