Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.
Fix
Public exploits 1
- LiviuPtr/CVE-2013-4322_PoC PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 6
- http://tomcat.apache.org/security-6.html Vendor Advisory
- http://tomcat.apache.org/security-7.html Vendor Advisory
- http://tomcat.apache.org/security-8.html Vendor Advisory
- http://tomcat.apache.org/security-6.html Vendor Advisory
- http://tomcat.apache.org/security-7.html Vendor Advisory
- http://tomcat.apache.org/security-8.html Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 4.3 · apacheNVD modified 2026-10-09 20:17
Affected (CPE criteria) 191
cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.2:beta:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.4:beta:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.10:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.11:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.14:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.15:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.16:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.17:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.18:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.19:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.20:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.21:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.22:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.23:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.24:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.25:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.26:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.27:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.28:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.29:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.30:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.31:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.32:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.33:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.34:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.35:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.36:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.37:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.38:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.39:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.40:*:*:*:*:*:*:*cpe:2.3:a:apache:tomcat:7.0.41:*:*:*:*:*:*:*- and 151 more
References 82
- http://advisories.mageia.org/MGASA-2014-0148.html
- http://marc.info/?l=bugtraq&m=144498216801440&w=2
- http://seclists.org/fulldisclosure/2014/Dec/23
- http://secunia.com/advisories/59036
- http://secunia.com/advisories/59675
- http://secunia.com/advisories/59722
- http://secunia.com/advisories/59724
- http://secunia.com/advisories/59873
- http://svn.apache.org/viewvc?view=revision&revision=1521834
- http://svn.apache.org/viewvc?view=revision&revision=1521864
- http://svn.apache.org/viewvc?view=revision&revision=1549522
- http://svn.apache.org/viewvc?view=revision&revision=1549523
- http://svn.apache.org/viewvc?view=revision&revision=1556540
- http://tomcat.apache.org/security-6.html Vendor Advisory
- http://tomcat.apache.org/security-7.html Vendor Advisory
- http://tomcat.apache.org/security-8.html Vendor Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21667883
- http://www-01.ibm.com/support/docview.wss?uid=swg21675886
- http://www-01.ibm.com/support/docview.wss?uid=swg21677147
- http://www-01.ibm.com/support/docview.wss?uid=swg21678113
- http://www-01.ibm.com/support/docview.wss?uid=swg21678231
- 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-2015:084
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
- http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.html
- http://www.securityfocus.com/archive/1/534161/100/0/threaded
- http://www.securityfocus.com/bid/65767
- http://www.ubuntu.com/usn/USN-2130-1
- http://www.vmware.com/security/advisories/VMSA-2014-0008.html
- http://www.vmware.com/security/advisories/VMSA-2014-0012.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1069905
- https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04851013
- https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E
- https://rhn.redhat.com/errata/RHSA-2014-0686.html
- http://advisories.mageia.org/MGASA-2014-0148.html
- http://marc.info/?l=bugtraq&m=144498216801440&w=2
- http://seclists.org/fulldisclosure/2014/Dec/23
- http://secunia.com/advisories/59036
- http://secunia.com/advisories/59675
- http://secunia.com/advisories/59722
- http://secunia.com/advisories/59724
- http://secunia.com/advisories/59873
- http://svn.apache.org/viewvc?view=revision&revision=1521834
- http://svn.apache.org/viewvc?view=revision&revision=1521864
- http://svn.apache.org/viewvc?view=revision&revision=1549522
- http://svn.apache.org/viewvc?view=revision&revision=1549523
- http://svn.apache.org/viewvc?view=revision&revision=1556540
- http://tomcat.apache.org/security-6.html Vendor Advisory
- http://tomcat.apache.org/security-7.html Vendor Advisory
- http://tomcat.apache.org/security-8.html Vendor Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21667883
- http://www-01.ibm.com/support/docview.wss?uid=swg21675886
- http://www-01.ibm.com/support/docview.wss?uid=swg21677147