Bug 1069905 (CVE-2013-4322)

Summary:	CVE-2013-4322 tomcat: incomplete fix for CVE-2012-3544
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	anil.saldhana, bdawidow, carnil, ccoleman, cdewolf, chuffman, dknox, dmcphers, drieden, dsirrine, epp-bugs, fnasser, grocha, hfnukal, huwang, ivan.afonichev, java-sig-commits, jawilson, jcoleman, jdg-bugs, jdoyle, jialiu, jkurik, jpallich, kconner, kejohnso, krzysztof.daniel, lgao, lkocman, lmeyer, mfranc, mmcgrath, myarboro, nobody+bgollahe, pcheung, pfrields, pgier, pslavice, rhatlapa, rhq-maint, rmaucher, rsvoboda, security-response-team, soa-p-jira, spinder, theute, ttarrant, vtunka, weli, wmealing
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tomcat 7.0.50, tomcat 6.0.39, tomcat 8.0.0-rc10	Doc Type:	Bug Fix
Doc Text:	It was discovered that the fix for CVE-2012-3544 did not properly resolve a denial of service flaw in the way Tomcat and JBoss Web processed chunk extensions and trailing headers in chunked requests. A remote attacker could use this flaw to send an excessively long request that, when processed by Tomcat, could consume network bandwidth, CPU, and memory on the Tomcat server. Note that chunked transfer encoding is enabled by default.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-03-25 22:06:07 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1069925, 1072499, 1072510, 1072511, 1072516, 1072517, 1072518, 1072519, 1072520, 1080306, 1089886, 1089890
Bug Blocks:	1069924, 1071958, 1072796, 1079801, 1079803

Description Vincent Danen 2014-02-25 21:50:57 UTC

The fix for CVE-2012-3544 was not complete. It did not cover the following cases:

a) Chunk extensions were not limited
b) Whitespace after the : in a trailing header was not limited

This has been corrected in upstream versions 8.0.0-rc10 [1],[2], 7.0.50 [3],[4], and 6.0.39 [5]

[1] http://svn.apache.org/viewvc?view=revision&revision=1521834
[2] http://svn.apache.org/viewvc?view=revision&revision=1549522
[3] http://svn.apache.org/viewvc?view=revision&revision=1521864
[4] http://svn.apache.org/viewvc?view=revision&revision=1549523
[5] http://svn.apache.org/viewvc?view=revision&revision=1556540

This could lead to a remote attacker causing a denial of service by streaming data, because Tomcat did not fully handle chunk extensions in chunked transfer coding.

Comment 2 Vincent Danen 2014-02-25 23:04:29 UTC

Created tomcat tracking bugs for this issue:

Affects: fedora-all [bug 1069925]

Comment 20 errata-xmlrpc 2014-04-23 18:30:34 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0429 https://rhn.redhat.com/errata/RHSA-2014-0429.html

Comment 23 errata-xmlrpc 2014-05-21 15:46:05 UTC

This issue has been addressed in following products:

  JBoss Enterprise Web Server 2.0.1

Via RHSA-2014:0528 https://rhn.redhat.com/errata/RHSA-2014-0528.html

Comment 24 errata-xmlrpc 2014-05-21 15:47:03 UTC

This issue has been addressed in following products:

  JBoss Enterprise Web Server 2.0.1

Via RHSA-2014:0527 https://rhn.redhat.com/errata/RHSA-2014-0527.html

Comment 25 errata-xmlrpc 2014-05-21 15:48:15 UTC

This issue has been addressed in following products:

  JBEWS 2 for RHEL 5
  JBEWS 2 for RHEL 6

Via RHSA-2014:0525 https://rhn.redhat.com/errata/RHSA-2014-0525.html

Comment 26 errata-xmlrpc 2014-05-21 16:06:52 UTC

This issue has been addressed in following products:

  JBEWS 2 for RHEL 5
  JBEWS 2 for RHEL 6

Via RHSA-2014:0526 https://rhn.redhat.com/errata/RHSA-2014-0526.html

Comment 27 errata-xmlrpc 2014-06-10 12:35:52 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:0686 https://rhn.redhat.com/errata/RHSA-2014-0686.html

Comment 28 Fedora Update System 2014-09-26 09:02:25 UTC

tomcat-7.0.52-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.