Multiple vulnerabilities in Apache Tomcat

Published: 2017-07-01 | Updated: 2017-10-05

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-7674 CVE-2017-7675
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Apache Tomcat Server applications / Web servers
Vendor	Apache Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper input validation

EUVDB-ID: #VU8697

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7674

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to conduct client and server side cache poisoning.

The weakness exists due to the failure to add an HTTP Vary header indicating that the response varies depending on Origin by the CORS Filter. A remote attacker can trick the victim to follow a specially crafted link and conduct client and server side cache poisoning.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks

Mitigation

The vulnerability is addressed in the following versions: 7.0.79, 8.0.45 and 8.5.16.

Vulnerable software versions

Apache Tomcat: 7.0.0 - 8.5.14

External links

http://tomcat.apache.org/security-7.html
http://tomcat.apache.org/security-8.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Security restrictions bypass

EUVDB-ID: #VU8698