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Red Hat 7 RHSA-2014-0827-01 Moderate: Tomcat DoS And XML Security Fixes

Calendar Jul 02, 2014 • User Avatar LinuxSecurity Advisories
4 - 7 min read
Redhat Large Esm H500
Topics%20covered

Topics Covered

security advisory security issue Red Hat Enterprise Linux DoS fix Moderate severity XML security Tomcat update
Updated tomcat packages that fix three security issues are now available for Red Hat Enterprise Linux 7. The Red Hat Security Response Team has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, 
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====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: tomcat security update
Advisory ID:       RHSA-2014:0827-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2014:0827.html
Issue date:        2014-07-02
CVE Names:         CVE-2014-0075 CVE-2014-0096 CVE-2014-0099 
====================================================================
1. Summary:

Updated tomcat packages that fix three security issues are now available
for Red Hat Enterprise Linux 7.

The Red Hat Security Response Team has rated this update as having Moderate
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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - noarch
Red Hat Enterprise Linux Client Optional (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch
Red Hat Enterprise Linux Server (v. 7) - noarch
Red Hat Enterprise Linux Server Optional (v. 7) - noarch
Red Hat Enterprise Linux Workstation (v. 7) - noarch
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch

3. Description:

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

It was discovered that Apache Tomcat did not limit the length of chunk
sizes when using chunked transfer encoding. A remote attacker could use
this flaw to perform a denial of service attack against Tomcat by streaming
an unlimited quantity of data, leading to excessive consumption of server
resources. (CVE-2014-0075)

It was found that Apache Tomcat did not check for overflowing values when
parsing request content length headers. A remote attacker could use this
flaw to perform an HTTP request smuggling attack on a Tomcat server located
behind a reverse proxy that processed the content length header correctly.
(CVE-2014-0099)

It was found that the org.apache.catalina.servlets.DefaultServlet
implementation in Apache Tomcat allowed the definition of XML External
Entities (XXEs) in provided XSLTs. A malicious application could use this
to circumvent intended security restrictions to disclose sensitive
information. (CVE-2014-0096)

The CVE-2014-0075 issue was discovered by David Jorm of Red Hat Product
Security.

All Tomcat 7 users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. Tomcat must be
restarted for this update to take effect.

4. 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
https://access.redhat.com/site/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1072776 - CVE-2014-0075 Tomcat/JBossWeb: Limited DoS in chunked transfer encoding input filter
1088342 - CVE-2014-0096 Tomcat/JBossWeb: XXE vulnerability via user supplied XSLTs
1102030 - CVE-2014-0099 Tomcat/JBossWeb: Request smuggling via malicious content length header

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
tomcat-7.0.42-6.el7_0.src.rpm

noarch:
tomcat-servlet-3.0-api-7.0.42-6.el7_0.noarch.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

noarch:
tomcat-7.0.42-6.el7_0.noarch.rpm
tomcat-admin-webapps-7.0.42-6.el7_0.noarch.rpm
tomcat-docs-webapp-7.0.42-6.el7_0.noarch.rpm
tomcat-el-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-javadoc-7.0.42-6.el7_0.noarch.rpm
tomcat-jsp-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-jsvc-7.0.42-6.el7_0.noarch.rpm
tomcat-lib-7.0.42-6.el7_0.noarch.rpm
tomcat-webapps-7.0.42-6.el7_0.noarch.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
tomcat-7.0.42-6.el7_0.src.rpm

noarch:
tomcat-servlet-3.0-api-7.0.42-6.el7_0.noarch.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

noarch:
tomcat-7.0.42-6.el7_0.noarch.rpm
tomcat-admin-webapps-7.0.42-6.el7_0.noarch.rpm
tomcat-docs-webapp-7.0.42-6.el7_0.noarch.rpm
tomcat-el-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-javadoc-7.0.42-6.el7_0.noarch.rpm
tomcat-jsp-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-jsvc-7.0.42-6.el7_0.noarch.rpm
tomcat-lib-7.0.42-6.el7_0.noarch.rpm
tomcat-webapps-7.0.42-6.el7_0.noarch.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
tomcat-7.0.42-6.el7_0.src.rpm

noarch:
tomcat-7.0.42-6.el7_0.noarch.rpm
tomcat-admin-webapps-7.0.42-6.el7_0.noarch.rpm
tomcat-el-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-jsp-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-lib-7.0.42-6.el7_0.noarch.rpm
tomcat-servlet-3.0-api-7.0.42-6.el7_0.noarch.rpm
tomcat-webapps-7.0.42-6.el7_0.noarch.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

noarch:
tomcat-7.0.42-6.el7_0.noarch.rpm
tomcat-admin-webapps-7.0.42-6.el7_0.noarch.rpm
tomcat-docs-webapp-7.0.42-6.el7_0.noarch.rpm
tomcat-el-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-javadoc-7.0.42-6.el7_0.noarch.rpm
tomcat-jsp-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-jsvc-7.0.42-6.el7_0.noarch.rpm
tomcat-lib-7.0.42-6.el7_0.noarch.rpm
tomcat-webapps-7.0.42-6.el7_0.noarch.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
tomcat-7.0.42-6.el7_0.src.rpm

noarch:
tomcat-7.0.42-6.el7_0.noarch.rpm
tomcat-admin-webapps-7.0.42-6.el7_0.noarch.rpm
tomcat-el-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-jsp-2.2-api-7.0.42-6.el7_0.noarch.rpm
tomcat-lib-7.0.42-6.el7_0.noarch.rpm
tomcat-servlet-3.0-api-7.0.42-6.el7_0.noarch.rpm
tomcat-webapps-7.0.42-6.el7_0.noarch.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

noarch:
tomcat-docs-webapp-7.0.42-6.el7_0.noarch.rpm
tomcat-javadoc-7.0.42-6.el7_0.noarch.rpm
tomcat-jsvc-7.0.42-6.el7_0.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://access.redhat.com/security/cve/CVE-2014-0075
https://access.redhat.com/security/cve/CVE-2014-0096
https://access.redhat.com/security/cve/CVE-2014-0099
https://access.redhat.com/security/updates/classification/#moderate
https://tomcat.apache.org/security-7.html

8. Contact:

The Red Hat security contact is .  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2014 Red Hat, Inc.
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Red Hat 7 RHSA-2014-0827-01 Moderate: Tomcat DoS And XML Security Fixes

red hat
Calendar Grey July 2, 2014
Dist Redhat Esm H88
The recent security patch for Tomcat on Red Hat addresses issues related to Denial of Service (DoS) threats and vulnerabilities associated with XML processing.
Updated tomcat packages that fix three security issues are now available for Red Hat Enterprise Linux 7

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 https://access.redhat.com/site/articles/11258

Summary

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.
It was discovered that Apache Tomcat did not limit the length of chunk sizes when using chunked transfer encoding. A remote attacker could use this flaw to perform a denial of service attack against Tomcat by streaming an unlimited quantity of data, leading to excessive consumption of server resources. (CVE-2014-0075)
It was found that Apache Tomcat did not check for overflowing values when parsing request content length headers. A remote attacker could use this flaw to perform an HTTP request smuggling attack on a Tomcat server located behind a reverse proxy that processed the content length header correctly. (CVE-2014-0099)
It was found that the org.apache.catalina.servlets.DefaultServlet implementation in Apache Tomcat allowed the definition of XML External Entities (XXEs) in provided XSLTs. A malicious application could use this to circumvent intended security restrictions to disclose sensitive information. (CVE-2014-0096)
The CVE-2014-0075 issue was discovered by David Jorm of Red Hat Product Security.
All Tomcat 7 users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. Tomcat must be restarted for this update to take effect.

Topics%20covered

Topics Covered

security advisory security issue Red Hat Enterprise Linux DoS fix Moderate severity XML security Tomcat update

References

https://access.redhat.com/security/cve/CVE-2014-0075 https://access.redhat.com/security/cve/CVE-2014-0096 https://access.redhat.com/security/cve/CVE-2014-0099 https://access.redhat.com/security/updates/classification/#moderate https://tomcat.apache.org/security-7.html

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: tomcat-7.0.42-6.el7_0.src.rpm
noarch: tomcat-servlet-3.0-api-7.0.42-6.el7_0.noarch.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: tomcat-7.0.42-6.el7_0.noarch.rpm tomcat-admin-webapps-7.0.42-6.el7_0.noarch.rpm tomcat-docs-webapp-7.0.42-6.el7_0.noarch.rpm tomcat-el-2.2-api-7.0.42-6.el7_0.noarch.rpm tomcat-javadoc-7.0.42-6.el7_0.noarch.rpm tomcat-jsp-2.2-api-7.0.42-6.el7_0.noarch.rpm tomcat-jsvc-7.0.42-6.el7_0.noarch.rpm tomcat-lib-7.0.42-6.el7_0.noarch.rpm tomcat-webapps-7.0.42-6.el7_0.noarch.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: tomcat-7.0.42-6.el7_0.src.rpm
noarch: tomcat-servlet-3.0-api-7.0.42-6.el7_0.noarch.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch: tomcat-7.0.42-6.el7_0.noarch.rpm tomcat-admin-webapps-7.0.42-6.el7_0.noarch.rpm tomcat-docs-webapp-7.0.42-6.el7_0.noarch.rpm tomcat-el-2.2-api-7.0.42-6.el7_0.noarch.rpm tomcat-javadoc-7.0.42-6.el7_0.noarch.rpm tomcat-jsp-2.2-api-7.0.42-6.el7_0.noarch.rpm tomcat-jsvc-7.0.42-6.el7_0.noarch.rpm tomcat-lib-7.0.42-6.el7_0.noarch.rpm tomcat-webapps-7.0.42-6.el7_0.noarch.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: tomcat-7.0.42-6.el7_0.src.rpm
noarch: tomcat-7.0.42-6.el7_0.noarch.rpm tomcat-admin-webapps-7.0.42-6.el7_0.noarch.rpm

Read the Full Advisory


Advisory ID: RHSA-2014:0827-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:0827.html
Issue date: 2014-07-02

Topic

Updated tomcat packages that fix three security issues are now availablefor Red Hat Enterprise Linux 7.The Red Hat Security Response Team has rated this update as having Moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory security issue Red Hat Enterprise Linux DoS fix Moderate severity XML security Tomcat update

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch

Red Hat Enterprise Linux Client Optional (v. 7) - noarch

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch

Red Hat Enterprise Linux Server (v. 7) - noarch

Red Hat Enterprise Linux Server Optional (v. 7) - noarch

Red Hat Enterprise Linux Workstation (v. 7) - noarch

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch

Bugs Fixed

1072776 - CVE-2014-0075 Tomcat/JBossWeb: Limited DoS in chunked transfer encoding input filter

1088342 - CVE-2014-0096 Tomcat/JBossWeb: XXE vulnerability via user supplied XSLTs

1102030 - CVE-2014-0099 Tomcat/JBossWeb: Request smuggling via malicious content length header

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