Vulnerability identifier: #VU64555

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-0227

CWE-ID: CWE-444

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 perform a HTTP request smuggling attack.

The vulnerability exists due to java/org/apache/coyote/http11/filters/ChunkedInputFilter.java in Apache Tomcat does not properly handle attempts to continue reading data after an error has occurred. A remote attacker can conduct HTTP request smuggling attacks or cause a denial of service (resource consumption) by streaming data with malformed chunked transfer coding.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 6.0.0 - 6.0.41, 7.0.0 - 7.0.54, 8.0.0 - 8.0.8

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External links
http://advisories.mageia.org/MGASA-2015-0081.html
http://archives.neohapsis.com/archives/bugtraq/2015-02/0067.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-February/150282.html
http://marc.info/?l=bugtraq&m=143393515412274&w=2
http://marc.info/?l=bugtraq&m=143403519711434&w=2
http://rhn.redhat.com/errata/RHSA-2015-0675.html
http://rhn.redhat.com/errata/RHSA-2015-0720.html
http://rhn.redhat.com/errata/RHSA-2015-0765.html
http://rhn.redhat.com/errata/RHSA-2015-0983.html
http://rhn.redhat.com/errata/RHSA-2015-0991.html
http://svn.apache.org/viewvc?view=revision&revision=1600984
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-7.html
http://tomcat.apache.org/security-8.html
http://www.debian.org/security/2016/dsa-3447
http://www.debian.org/security/2016/dsa-3530
http://www.mandriva.com/security/advisories?name=MDVSA-2015:052
http://www.mandriva.com/security/advisories?name=MDVSA-2015:053
http://www.mandriva.com/security/advisories?name=MDVSA-2015:084
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://www.securityfocus.com/bid/72717
http://www.securitytracker.com/id/1032791
http://www.ubuntu.com/usn/USN-2654-1
http://www.ubuntu.com/usn/USN-2655-1
http://bugzilla.redhat.com/show_bug.cgi?id=1109196
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
http://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c@%3Cdev.tomcat.apache.org%3E
http://source.jboss.org/changelog/JBossWeb?cs=2455

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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.