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Red Hat alert RHSA-2012:0475-01 (tomcat6)

From:  bugzilla@redhat.com
To:  rhsa-announce@redhat.com, enterprise-watch-list@redhat.com
Subject:  [RHSA-2012:0475-01] Moderate: tomcat6 security update
Date:  Wed, 11 Apr 2012 18:21:24 +0000
Message-ID:  <201204111821.q3BILPXX030445@int-mx11.intmail.prod.int.phx2.redhat.com>
Archive-link:  Article, Thread

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: tomcat6 security update Advisory ID: RHSA-2012:0475-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0475.html Issue date: 2012-04-11 CVE Names: CVE-2011-4858 CVE-2012-0022 ===================================================================== 1. Summary: Updated tomcat6 packages that fix two security issues are now available for Red Hat Enterprise Linux 6. 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 Desktop Optional (v. 6) - noarch Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch Red Hat Enterprise Linux Server (v. 6) - noarch Red Hat Enterprise Linux Server Optional (v. 6) - noarch Red Hat Enterprise Linux Workstation (v. 6) - noarch Red Hat Enterprise Linux Workstation Optional (v. 6) - noarch 3. Description: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies. It was found that the Java hashCode() method implementation was susceptible to predictable hash collisions. A remote attacker could use this flaw to cause Tomcat to use an excessive amount of CPU time by sending an HTTP request with a large number of parameters whose names map to the same hash value. This update introduces a limit on the number of parameters processed per request to mitigate this issue. The default limit is 512 for parameters and 128 for headers. These defaults can be changed by setting the org.apache.tomcat.util.http.Parameters.MAX_COUNT and org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties. (CVE-2011-4858) It was found that Tomcat did not handle large numbers of parameters and large parameter values efficiently. A remote attacker could make Tomcat use an excessive amount of CPU time by sending an HTTP request containing a large number of parameters or large parameter values. This update introduces limits on the number of parameters and headers processed per request to address this issue. Refer to the CVE-2011-4858 description for information about the org.apache.tomcat.util.http.Parameters.MAX_COUNT and org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties. (CVE-2012-0022) Red Hat would like to thank oCERT for reporting CVE-2011-4858. oCERT acknowledges Julian Wälde and Alexander Klink as the original reporters of CVE-2011-4858. Users of Tomcat should upgrade to these updated packages, which 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/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 750521 - CVE-2011-4858 tomcat: hash table collisions CPU usage DoS (oCERT-2011-003) 783359 - CVE-2012-0022 tomcat: large number of parameters DoS 6. Package List: Red Hat Enterprise Linux Desktop Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/... noarch: tomcat6-6.0.24-36.el6_2.noarch.rpm tomcat6-admin-webapps-6.0.24-36.el6_2.noarch.rpm tomcat6-docs-webapp-6.0.24-36.el6_2.noarch.rpm tomcat6-el-2.1-api-6.0.24-36.el6_2.noarch.rpm tomcat6-javadoc-6.0.24-36.el6_2.noarch.rpm tomcat6-jsp-2.1-api-6.0.24-36.el6_2.noarch.rpm tomcat6-lib-6.0.24-36.el6_2.noarch.rpm tomcat6-servlet-2.5-api-6.0.24-36.el6_2.noarch.rpm tomcat6-webapps-6.0.24-36.el6_2.noarch.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Compute... noarch: tomcat6-6.0.24-36.el6_2.noarch.rpm tomcat6-admin-webapps-6.0.24-36.el6_2.noarch.rpm tomcat6-docs-webapp-6.0.24-36.el6_2.noarch.rpm tomcat6-el-2.1-api-6.0.24-36.el6_2.noarch.rpm tomcat6-javadoc-6.0.24-36.el6_2.noarch.rpm tomcat6-jsp-2.1-api-6.0.24-36.el6_2.noarch.rpm tomcat6-lib-6.0.24-36.el6_2.noarch.rpm tomcat6-servlet-2.5-api-6.0.24-36.el6_2.noarch.rpm tomcat6-webapps-6.0.24-36.el6_2.noarch.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/... noarch: tomcat6-6.0.24-36.el6_2.noarch.rpm tomcat6-el-2.1-api-6.0.24-36.el6_2.noarch.rpm tomcat6-jsp-2.1-api-6.0.24-36.el6_2.noarch.rpm tomcat6-lib-6.0.24-36.el6_2.noarch.rpm tomcat6-servlet-2.5-api-6.0.24-36.el6_2.noarch.rpm Red Hat Enterprise Linux Server Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/... noarch: tomcat6-admin-webapps-6.0.24-36.el6_2.noarch.rpm tomcat6-docs-webapp-6.0.24-36.el6_2.noarch.rpm tomcat6-javadoc-6.0.24-36.el6_2.noarch.rpm tomcat6-webapps-6.0.24-36.el6_2.noarch.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Worksta... noarch: tomcat6-6.0.24-36.el6_2.noarch.rpm tomcat6-el-2.1-api-6.0.24-36.el6_2.noarch.rpm tomcat6-jsp-2.1-api-6.0.24-36.el6_2.noarch.rpm tomcat6-lib-6.0.24-36.el6_2.noarch.rpm tomcat6-servlet-2.5-api-6.0.24-36.el6_2.noarch.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Worksta... noarch: tomcat6-admin-webapps-6.0.24-36.el6_2.noarch.rpm tomcat6-docs-webapp-6.0.24-36.el6_2.noarch.rpm tomcat6-javadoc-6.0.24-36.el6_2.noarch.rpm tomcat6-webapps-6.0.24-36.el6_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://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2011-4858.html https://www.redhat.com/security/data/cve/CVE-2012-0022.html https://access.redhat.com/security/updates/classification... http://tomcat.apache.org/security-6.html 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2012 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFPhcuMXlSAg2UNWIIRAmgcAKCvoGLuPZCqAHY7u1xm60u7il7bEACfQGBI 8HSOguJdUvIJBrIr8kyWHpc= =1ReJ -----END PGP SIGNATURE----- -- Enterprise-watch-list mailing list Enterprise-watch-list@redhat.com https://www.redhat.com/mailman/listinfo/enterprise-watch-...


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