20 January 2012
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0073 Moderate: jbossweb security update 20 January 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: jbossweb Publisher: Red Hat Operating System: Red Hat UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Access Privileged Data -- Existing Account Denial of Service -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2011-5064 CVE-2011-5063 CVE-2011-5062 CVE-2011-4858 CVE-2011-2526 CVE-2011-1184 Reference: ASB-2012.0008 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-0041.html Comment: This advisory references vulnerabilities in products which run on platforms other than Red Hat. It is recommended that administrators running jbossweb check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: jbossweb security update Advisory ID: RHSA-2012:0041-01 Product: JBoss Enterprise Application Platform Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0041.html Issue date: 2012-01-19 CVE Names: CVE-2011-1184 CVE-2011-2526 CVE-2011-4858 CVE-2011-5062 CVE-2011-5063 CVE-2011-5064 ===================================================================== 1. Summary: An update for JBoss Enterprise Application Platform 4.3.0 CP10 that fixes multiple security issues is now available from the Red Hat Customer Portal. 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. Description: JBoss Web Server is the web container, based on Apache Tomcat, in JBoss Enterprise Application Platform. It provides a single deployment platform for the JavaServer Pages (JSP) and Java Servlet technologies. Multiple flaws were found in the way JBoss Web Server handled HTTP DIGEST authentication. These flaws weakened the JBoss Web Server HTTP DIGEST authentication implementation, subjecting it to some of the weaknesses of HTTP BASIC authentication, for example, allowing remote attackers to perform session replay attacks. (CVE-2011-1184, CVE-2011-5062, CVE-2011-5063, CVE-2011-5064) It was found that the Java hashCode() method implementation was susceptible to predictable hash collisions. A remote attacker could use this flaw to cause JBoss Web Server 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 and headers 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 in "jboss-as/server/[PROFILE]/deploy/properties-service.xml". (CVE-2011-4858) A flaw was found in the way JBoss Web Server handled sendfile request attributes when using the HTTP APR (Apache Portable Runtime) or NIO (Non-Blocking I/O) connector. A malicious web application running on a JBoss Web Server instance could use this flaw to bypass security manager restrictions and gain access to files it would otherwise be unable to access, or possibly terminate the Java Virtual Machine (JVM). (CVE-2011-2526) Red Hat would like to thank oCERT for reporting CVE-2011-4858, and the Apache Tomcat project for reporting CVE-2011-2526. oCERT acknowledges Julian WÃ¤lde and Alexander Klink as the original reporters of CVE-2011-4858. Warning: Before applying this update, back up your JBoss Enterprise Application Platform's "jboss-as/server/[PROFILE]/deploy/" directory, along with all other customized configuration files. All users of JBoss Enterprise Application Platform 4.3.0 CP10 as provided from the Red Hat Customer Portal are advised to install this update. 3. Solution: The References section of this erratum contains a download link (you must log in to download the update). Before applying the update, back up your existing JBoss Enterprise Application Platform installation (including all applications and configuration files). The JBoss server process must be restarted for this update to take effect. 4. Bugs fixed (http://bugzilla.redhat.com/): 720948 - CVE-2011-2526 tomcat: security manager restrictions bypass 741401 - CVE-2011-1184 CVE-2011-5062 CVE-2011-5063 CVE-2011-5064 tomcat: Multiple weaknesses in HTTP DIGEST authentication 750521 - CVE-2011-4858 tomcat: hash table collisions CPU usage DoS (oCERT-2011-003) 5. References: https://www.redhat.com/security/data/cve/CVE-2011-1184.html https://www.redhat.com/security/data/cve/CVE-2011-2526.html https://www.redhat.com/security/data/cve/CVE-2011-4858.html https://www.redhat.com/security/data/cve/CVE-2011-5062.html https://www.redhat.com/security/data/cve/CVE-2011-5063.html https://www.redhat.com/security/data/cve/CVE-2011-5064.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=appplatform&downloadType=securityPatches&version=4.3.0.GA_CP10 6. Contact: The Red Hat security contact is <email@example.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) iD8DBQFPGFJeXlSAg2UNWIIRAlxTAJ0buYSgisBEnmUE7zlTp3y4ufbKsACbB76J 1+6Ys38zl7PCRiMcW6lkqWM= =91er - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to firstname.lastname@example.org and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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