RHSA-2011:0348 - Security Advisory

Topic

Updated tomcat6 packages that fix two security issues are now available for
JBoss Enterprise Web Server 1.0.

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)

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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• JBoss Enterprise Web Server 1 for RHEL 5 x86_64
• JBoss Enterprise Web Server 1 for RHEL 5 i386

Fixes

• BZ - 674336 - CVE-2010-4476 JDK Double.parseDouble Denial-Of-Service
• BZ - 675338 - CVE-2011-0534 tomcat: remote DoS via NIO connector

CVEs

• CVE-2010-4476
• CVE-2011-0534

References

• https://access.redhat.com/security/updates/classification/#important
• http://tomcat.apache.org/security-6.html