Bug 675338 (CVE-2011-0534)

Summary:	CVE-2011-0534 tomcat: remote DoS via NIO connector
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:	dknox, dwalluck, mschoene, pcheung, pskopek, sochotni, wnefal+redhatbugzilla
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tomcat6-6.0.24-19.el6_0	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-06-09 09:59:01 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:	674601, 674921, 674922, 675794, 676011
Bug Blocks:

Description Vincent Danen 2011-02-04 23:24:31 UTC

Apache Tomcat 6.0.32 was released [1] to fix, among other things, a security flaw in the NIO connector.  The NIO connector would expand its buffer endlessly while reading in the request line, effectively ignoring the maxHttpHeaderSize setting.  The upstream commit to fix the issue is in r1066313 [2] and there is a corresponding bugzilla entry [3].  By the indications upstream, this only affects Tomcat 6.x and 7.x, although it does not specifically mention that 5.x is not vulnerable.

[1] http://tomcat.apache.org/security-6.html#Fixed_in_Apache_Tomcat_6.0.32
[2] http://svn.apache.org/viewvc?view=revision&revision=1066313
[3] https://issues.apache.org/bugzilla/show_bug.cgi?id=50631

Comment 1 Vincent Danen 2011-02-07 17:11:08 UTC

The upstream mail sent to the mailing lists has further details on this issue.  It only affects Tomcat 6.0.0 to 6.0.30 and Tomcat 7.0.0 to 7.0.6:

http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0076.html

Comment 2 Vincent Danen 2011-02-07 19:02:43 UTC

Created tomcat6 tracking bugs for this issue

Affects: fedora-all [bug 675794]

Comment 5 errata-xmlrpc 2011-03-09 20:52:33 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0335 https://rhn.redhat.com/errata/RHSA-2011-0335.html

Comment 6 errata-xmlrpc 2011-03-11 00:38:37 UTC

This issue has been addressed in following products:

  JBEWS 1.0 for RHEL 4
  JBEWS 1.0 for RHEL 5

Via RHSA-2011:0348 https://rhn.redhat.com/errata/RHSA-2011-0348.html

Comment 7 errata-xmlrpc 2011-03-11 01:09:26 UTC

This issue has been addressed in following products:

  JBoss Enterprise Web Server 1.0

Via RHSA-2011:0350 https://rhn.redhat.com/errata/RHSA-2011-0350.html