Security restrictions bypass in Apache Tomcat

Published: 2018-02-26

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-1305 CVE-2018-1304
CWE-ID	CWE-264
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) Security restrictions bypass

EUVDB-ID: #VU10706

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-2018-1305

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The weakness exists due to security constraints defined by annotations of Servlets are only applied once a Servlet had been loaded. A remote attacker can supply a specially crafted URL pattern and any URLs below that point, bypass security restrictions and gain unauthorised access to arbitrary resources.

Mitigation

Update to version 7.0.85, 9.0.5.

Vulnerable software versions

Apache Tomcat: 7.0.0 - 9.0.4

External links

http://tomcat.apache.org/security-7.html
http://tomcat.apache.org/security-9.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: #VU10707