-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: tomcat5 security update Advisory ID: RHSA-2012:0474-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0474.html Issue date: 2012-04-11 CVE Names: CVE-2011-4858 CVE-2012-0022 ===================================================================== 1. Summary: Updated tomcat5 packages that fix two security issues are now available for Red Hat Enterprise Linux 5. 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: RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 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 (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/tomcat5-5.5.23-0jpp.31.el5_8.src.rpm i386: tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.i386.rpm x86_64: tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.x86_64.rpm RHEL Desktop Workstation (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/tomcat5-5.5.23-0jpp.31.el5_8.src.rpm i386: tomcat5-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-common-lib-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-jasper-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-server-lib-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-webapps-5.5.23-0jpp.31.el5_8.i386.rpm x86_64: tomcat5-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-common-lib-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-jasper-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-server-lib-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-webapps-5.5.23-0jpp.31.el5_8.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/tomcat5-5.5.23-0jpp.31.el5_8.src.rpm i386: tomcat5-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-common-lib-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-jasper-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-server-lib-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm tomcat5-webapps-5.5.23-0jpp.31.el5_8.i386.rpm ia64: tomcat5-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-common-lib-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-jasper-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-server-lib-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.ia64.rpm tomcat5-webapps-5.5.23-0jpp.31.el5_8.ia64.rpm ppc: tomcat5-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-5.5.23-0jpp.31.el5_8.ppc64.rpm tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-common-lib-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.ppc64.rpm tomcat5-jasper-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-server-lib-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.ppc.rpm tomcat5-webapps-5.5.23-0jpp.31.el5_8.ppc.rpm s390x: tomcat5-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-common-lib-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-jasper-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-server-lib-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.s390x.rpm tomcat5-webapps-5.5.23-0jpp.31.el5_8.s390x.rpm x86_64: tomcat5-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-common-lib-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-jasper-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-server-lib-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm tomcat5-webapps-5.5.23-0jpp.31.el5_8.x86_64.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/#moderate http://tomcat.apache.org/security-5.html 8. Contact: The Red Hat security contact is . 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) iD8DBQFPhctDXlSAg2UNWIIRAnmwAKCG8ANIA6BMLPlUE4o+l6DV8EXkOgCgopJx Iouhu7nObQ+2gvPAV+Vvp7o= =WA/1 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce