RedHat: Important: jbossas security update
Summary
Summary
Tomcat is a servlet container for Java Servlet and JavaServer Pages technologies. This update addresses the following issues: Tomcat was found to accept multiple content-length headers in a request. This could allow attackers to poison a web-cache, bypass web application firewall protection, or conduct cross-site scripting attacks. (CVE-2005-2090) Tomcat permitted various characters as path delimiters. If Tomcat was used behind certain proxies and configured to only proxy some contexts, an attacker could construct an HTTP request to work around the context restriction and potentially access non-proxied content. (CVE-2007-0450) Users should upgrade to these erratum packages, which contain an update to jbossas to include a version of Tomcat that resolves these issues. Updated jakarta-commons-modeler packages are also included which correct a bug when used with Tomcat 5.5.23.
Solution
Note: /etc/tomcat5/web.xml has been updated to disable directory listing by
default. If you have previously modified /etc/tomcat5/web.xml, this change
will not be made automatically and you should manually update the value for
the "listings" parameter to "false".
Note: In response to CVE-2007-0450, JBoss AS considers encoded slashes and
backslashes in URLs invalid and its usage will result in HTTP 400 error. It
is possible to allow encoded slashes and backslashes by following the steps
outlined below, however doing so will expose you to CVE-2007-0450 related
attacks:
a) If you use the /var/lib/jbossas/bin/run.sh setup, please edit
/etc/jbossas/run.conf and append
- -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true
- -Dorg.apache.catalina.connector.CoyoteAdapter.ALLOW_BACKSLASH=true to the
string assigned to JAVA_OPTS
b) If you use the init script setup to run multiple JBoss AS services and
you wish to allow encoding by default on all services, please edit
/etc/jbossas/jbossas.conf and add the line JAVA_OPTS="${JAVA_OPTS}
- -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true
- -Dorg.apache.catalina.connector.CoyoteAdapter.ALLOW_BACKSLASH=true"
c) If you use the init script setup to run multiple JBoss AS services and
want to allow encoding of slashes and backslashes for a particular service,
please edit /etc/sysconfig/${NAME} (where NAME is the name of your service)
and add the line JAVA_OPTS="${JAVA_OPTS}
- -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true
- -Dorg.apache.catalina.connector.CoyoteAdapter.ALLOW_BACKSLASH=true"
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.
This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
5. Bug IDs fixed (http://bugzilla.redhat.com/):
238574 - CVE-2005-2090 multiple tomcat issues (CVE-2007-0450)
6. RPMs required:
Red Hat Application Stack v1 for Enterprise Linux AS (v.4):
SRPMS:
1b4126e20b4e29398016f8b68cb6cef9 jbossas-4.0.5-2.CP04.el4s1.2.src.rpm
07a3c0fc01b59cce76d0f329358e5ee2 jbossas-ejb3-1.0.0-0.2.rc9.CP04.el4s1.2.src.rpm
noarch:
4b20eab75fad0a8e88eaa87fa720e216 jbossas-4.0.5-2.CP04.el4s1.2.noarch.rpm
ad000c590574219c32649e2f7d6475ff jbossas-core-4.0.5-2.CP04.el4s1.2.noarch.rpm
2690014231347df9c2d827f05404f080 jbossas-ejb3-1.0.0-0.2.rc9.CP04.el4s1.2.noarch.rpm
Red Hat Application Stack v1 for Enterprise Linux ES (v.4):
SRPMS:
1b4126e20b4e29398016f8b68cb6cef9 jbossas-4.0.5-2.CP04.el4s1.2.src.rpm
07a3c0fc01b59cce76d0f329358e5ee2 jbossas-ejb3-1.0.0-0.2.rc9.CP04.el4s1.2.src.rpm
noarch:
4b20eab75fad0a8e88eaa87fa720e216 jbossas-4.0.5-2.CP04.el4s1.2.noarch.rpm
ad000c590574219c32649e2f7d6475ff jbossas-core-4.0.5-2.CP04.el4s1.2.noarch.rpm
2690014231347df9c2d827f05404f080 jbossas-ejb3-1.0.0-0.2.rc9.CP04.el4s1.2.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://www.redhat.com/security/team/key/#package
References
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2090 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0450 https://tomcat.apache.org/security-5.html http://www.redhat.com/security/updates/classification/#important
Package List
Topic
Topic
Relevant Releases Architectures
Red Hat Application Stack v1 for Enterprise Linux AS (v.4) - noarch
Red Hat Application Stack v1 for Enterprise Linux ES (v.4) - noarch
Bugs Fixed