Issued:
2011-03-09
Updated:
2011-03-09

RHSA-2011:0335 - Important: tomcat6 security and bug fix update

Synopsis

Important: tomcat6 security and bug fix update

Type/Severity

Security Advisory Important

Topic

Updated tomcat6 packages that fix two security issues and one bug are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

A denial of service flaw was found in the way certain strings were converted to Double objects. A remote attacker could use this flaw to cause Tomcat to hang via a specially-crafted HTTP request. (CVE-2010-4476)

A flaw was found in the Tomcat NIO (Non-Blocking I/O) connector. A remote attacker could use this flaw to cause a denial of service (out-of-memory condition) via a specially-crafted request containing a large NIO buffer size request value. (CVE-2011-0534)

This update also fixes the following bug:

  • A bug in the "tomcat6" init script prevented additional Tomcat instances from starting. As well, running "service tomcat6 start" caused configuration options applied from "/etc/sysconfig/tomcat6" to be overwritten with those from "/etc/tomcat6/tomcat6.conf". With this update, multiple instances of Tomcat run as expected. (BZ#676922)

Users of Tomcat should upgrade to these updated packages, which contain backported patches to correct these issues. Tomcat must be restarted for this update to take effect.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • tomcat6-jsp-2.1-api-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-el-2.1-api-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-javadoc-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-servlet-2.5-api-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-webapps-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-lib-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-docs-webapp-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-log4j-6.0.24-24.el6_0.noarch.rpm
  • tomcat6-6.0.24-24.el6_0.src.rpm
  • tomcat6-admin-webapps-6.0.24-24.el6_0.noarch.rpm

Fixes

CVEs

References

Additional information