Vulnerability identifier: #VU15156

Vulnerability risk: Low

CVSSv3.1: 2.8 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-11784

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Apache Tomcat
Server applications / Web servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URI.

The vulnerability exists due to improper sanitization of user-supplied data. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary URI.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 9.0.0-M1 - 9.0.11, 8.5.0 - 8.5.33, 7.0.23 - 7.0.90

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External links
http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.12
http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.34
http://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.91

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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.