Vulnerability identifier: #VU64554

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-0099

CWE-ID: CWE-190

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 integer overflow in java/org/apache/tomcat/util/buf/Ascii.java in Apache Tomcat when operated behind a reverse proxy. A remote attacker can conduct HTTP request smuggling attack via a crafted Content-Length HTTP header.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 6.0.0 - 6.0.39, 7.0.0 - 7.0.52, 8.0.0 - 8.0.0 RC10

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External links
http://advisories.mageia.org/MGASA-2014-0268.html
http://linux.oracle.com/errata/ELSA-2014-0865.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-February/150282.html
http://marc.info/?l=bugtraq&m=141017844705317&w=2
http://marc.info/?l=bugtraq&m=141390017113542&w=2
http://marc.info/?l=bugtraq&m=144498216801440&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://seclists.org/fulldisclosure/2014/Dec/23
http://seclists.org/fulldisclosure/2014/May/138
http://seclists.org/fulldisclosure/2014/May/140
http://secunia.com/advisories/59121
http://secunia.com/advisories/59678
http://secunia.com/advisories/59732
http://secunia.com/advisories/59835
http://secunia.com/advisories/59849
http://secunia.com/advisories/59873
http://secunia.com/advisories/60729
http://secunia.com/advisories/60793
http://svn.apache.org/viewvc?view=revision&revision=1578812
http://svn.apache.org/viewvc?view=revision&revision=1578814
http://svn.apache.org/viewvc?view=revision&revision=1580473
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/cpujul2014-1972956.html
http://www.securityfocus.com/archive/1/532218/100/0/threaded
http://www.securityfocus.com/archive/1/532221/100/0/threaded
http://www.securityfocus.com/archive/1/534161/100/0/threaded
http://www.securityfocus.com/bid/67668
http://www.securitytracker.com/id/1030302
http://www.vmware.com/security/advisories/VMSA-2014-0012.html
http://www-01.ibm.com/support/docview.wss?uid=swg21678231
http://www-01.ibm.com/support/docview.wss?uid=swg21680603
http://www-01.ibm.com/support/docview.wss?uid=swg21681528
http://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04851013
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

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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.