Improper Authentication in Apache Tomcat

1) Improper Authentication

EUVDB-ID: #VU64541

Risk: Medium

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-2013-2067

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to java/org/apache/catalina/authenticator/FormAuthenticator.java in the form authentication feature in Apache Tomcat does not properly handle the relationships between authentication requirements and sessions. A remote attacker can inject a request into a session by sending this request during completion of the login form, a variant of a session fixation attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 6.0.3 - 7.0.32

External links

http://archives.neohapsis.com/archives/bugtraq/2013-05/0041.html
http://rhn.redhat.com/errata/RHSA-2013-0833.html
http://rhn.redhat.com/errata/RHSA-2013-0834.html
http://rhn.redhat.com/errata/RHSA-2013-0839.html
http://rhn.redhat.com/errata/RHSA-2013-0964.html
http://rhn.redhat.com/errata/RHSA-2013-1437.html
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/catalina/authenticator/FormAuthenticator.java?r1=1417891&r2=1417890&pathrev=1417891
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/apache/catalina/authenticator/FormAuthenticator.java?r1=1408044&r2=1408043&pathrev=1408044
http://svn.apache.org/viewvc?view=revision&revision=1408044
http://svn.apache.org/viewvc?view=revision&revision=1417891
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-7.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.oracle.com/technetwork/topics/security/cpujan2014-1972949.html
http://www.securityfocus.com/bid/59799
http://www.securityfocus.com/bid/64758
http://www.ubuntu.com/usn/USN-1841-1
http://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113@%3Cdev.tomcat.apache.org%3E
http://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b@%3Cdev.tomcat.apache.org%3E
http://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95@%3Cdev.tomcat.apache.org%3E
http://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb@%3Cdev.tomcat.apache.org%3E
http://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c@%3Cdev.tomcat.apache.org%3E
http://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b@%3Cdev.tomcat.apache.org%3E

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.