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Bulletins   Conferences   News & Media   Services   Web Log   Site Map   Site Help   Member login Login »  Become a member »   Home » Security Bul... » Security Bul... » AusCERT Exte... » ESB-2012.0488 - [RedHat] Apache Tomcat: Multiple vul...   ESB-2012.0488 - [RedHat] Apache Tomcat: Multiple vulnerabilities Date: 22 May 2012 References: ESB-2011.0726  ASB-2011.0064.2  ESB-2011.0880  ESB-2011.0975  ESB-2011.1197  ESB-2011.1271  ESB-2012.0067  ESB-2012.0073  ESB-2012.0102  ESB-2012.0103   ESB-2012.0112.2  ESB-2012.0122  ESB-2012.0216  ESB-2012.0239  ESB-2012.0299  ESB-2012.0365  ESB-2012.0837.2   Click here for printable version -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2012.0488 Moderate: tomcat security and bug fix update 22 May 2012 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache Tomcat 5 Apache Tomcat 6 Publisher: Red Hat Operating System: Red Hat Impact/Access: Access Privileged Data -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Unauthorised Access -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2012-0022 CVE-2011-5064 CVE-2011-5063 CVE-2011-5062 CVE-2011-4858 CVE-2011-3375 CVE-2011-3190 CVE-2011-2526 CVE-2011-2204 CVE-2011-1184 Reference: ASB-2011.0064.2 ESB-2012.0365 ESB-2012.0299 ESB-2012.0239 ESB-2012.0216 ESB-2012.0122 ESB-2012.0112.2 ESB-2012.0103 ESB-2012.0102 ESB-2012.0073 ESB-2012.0067 ESB-2011.1271 ESB-2011.1197 ESB-2011.0975 ESB-2011.0880 ESB-2011.0726 ESB-2011.0673 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2012-0679.html https://rhn.redhat.com/errata/RHSA-2012-0681.html Comment: This bulletin contains two (2) Red Hat security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: tomcat5 security and bug fix update Advisory ID: RHSA-2012:0679-01 Product: JBoss Enterprise Web Server Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0679.html Issue date: 2012-05-21 CVE Names: CVE-2011-1184 CVE-2011-2204 CVE-2011-2526 CVE-2011-3190 CVE-2011-4858 CVE-2011-5062 CVE-2011-5063 CVE-2011-5064 CVE-2012-0022 ===================================================================== 1. Summary: An update for the Apache Tomcat 5 component for JBoss Enterprise Web Server 1.0.2 that fixes multiple security issues and two bugs 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: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies. JBoss Enterprise Web Server includes the Tomcat Native library, providing Apache Portable Runtime (APR) support for Tomcat. References in this text to APR refer to the Tomcat Native implementation, not any other apr package. This update includes bug fixes as documented in JBPAPP-4873 and JBPAPP-6133. It also resolves the following security issues: Multiple flaws were found in the way Tomcat handled HTTP DIGEST authentication. These flaws weakened the Tomcat 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) A flaw was found in the way the Coyote (org.apache.coyote.ajp.AjpProcessor) and APR (org.apache.coyote.ajp.AjpAprProcessor) Tomcat AJP (Apache JServ Protocol) connectors processed certain POST requests. An attacker could send a specially-crafted request that would cause the connector to treat the message body as a new request. This allows arbitrary AJP messages to be injected, possibly allowing an attacker to bypass a web application's authentication checks and gain access to information they would otherwise be unable to access. The JK (org.apache.jk.server.JkCoyoteHandler) connector is used by default when the APR libraries are not present. The JK connector is not affected by this flaw. (CVE-2011-3190) 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) A flaw was found in the Tomcat MemoryUserDatabase. If a runtime exception occurred when creating a new user with a JMX client, that user's password was logged to Tomcat log files. Note: By default, only administrators have access to such log files. (CVE-2011-2204) A flaw was found in the way Tomcat handled sendfile request attributes when using the HTTP APR or NIO (Non-Blocking I/O) connector. A malicious web application running on a Tomcat 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). The HTTP NIO connector is used by default in JBoss Enterprise Web Server. (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 Wälde and Alexander Klink as the original reporters of CVE-2011-4858. All users of JBoss Enterprise Web Server 1.0.2 as provided from the Red Hat Customer Portal are advised to apply 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 Web Server installation (including all applications and configuration files). Tomcat must be restarted for this update to take effect. 4. Bugs fixed (http://bugzilla.redhat.com/): 717013 - CVE-2011-2204 tomcat: password disclosure vulnerability 720948 - CVE-2011-2526 tomcat: security manager restrictions bypass 734868 - CVE-2011-3190 tomcat: authentication bypass and information disclosure 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) 783359 - CVE-2012-0022 tomcat: large number of parameters DoS 5. References: https://www.redhat.com/security/data/cve/CVE-2011-1184.html https://www.redhat.com/security/data/cve/CVE-2011-2204.html https://www.redhat.com/security/data/cve/CVE-2011-2526.html https://www.redhat.com/security/data/cve/CVE-2011-3190.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://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 https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=webserver&downloadType=securityPatches&version=1.0.2 https://issues.jboss.org/browse/JBPAPP-4873 https://issues.jboss.org/browse/JBPAPP-6133 6. 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) iD8DBQFPunkDXlSAg2UNWIIRArNyAJ9HvZnDjKNgx3KRf7aH4T/V8cp6sACeMtrc Cdkab+W+Hzim/IX+j30WFj4= =81lW - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: tomcat6 security and bug fix update Advisory ID: RHSA-2012:0681-01 Product: JBoss Enterprise Web Server Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0681.html Issue date: 2012-05-21 CVE Names: CVE-2011-1184 CVE-2011-2204 CVE-2011-2526 CVE-2011-3190 CVE-2011-3375 CVE-2011-4858 CVE-2011-5062 CVE-2011-5063 CVE-2011-5064 CVE-2012-0022 ===================================================================== 1. Summary: An update for the Apache Tomcat 6 component for JBoss Enterprise Web Server 1.0.2 that fixes multiple security issues and three bugs 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: Apache Tomcat is a servlet container. JBoss Enterprise Web Server includes the Tomcat Native library, providing Apache Portable Runtime (APR) support for Tomcat. References in this text to APR refer to the Tomcat Native implementation, not any other apr package. This update fixes the JBPAPP-4873, JBPAPP-6133, and JBPAPP-6852 bugs. It also resolves the following security issues: Multiple flaws weakened the Tomcat 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) A flaw was found in the way the Coyote (org.apache.coyote.ajp.AjpProcessor) and APR (org.apache.coyote.ajp.AjpAprProcessor) Tomcat AJP (Apache JServ Protocol) connectors processed certain POST requests. An attacker could send a specially-crafted request that would cause the connector to treat the message body as a new request. This allows arbitrary AJP messages to be injected, possibly allowing an attacker to bypass a web application's authentication checks and gain access to information they would otherwise be unable to access. The JK (org.apache.jk.server.JkCoyoteHandler) connector is used by default when the APR libraries are not present. The JK connector is not affected by this flaw. (CVE-2011-3190) A flaw in the way Tomcat recycled objects that contain data from user requests (such as IP addresses and HTTP headers) when certain errors occurred. If a user sent a request that caused an error to be logged, Tomcat would return a reply to the next request (which could be sent by a different user) with data from the first user's request, leading to information disclosure. Under certain conditions, a remote attacker could leverage this flaw to hijack sessions. (CVE-2011-3375) 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) 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) A flaw in the Tomcat MemoryUserDatabase. If a runtime exception occurred when creating a new user with a JMX client, that user's password was logged to Tomcat log files. Note: By default, only administrators have access to such log files. (CVE-2011-2204) A flaw in the way Tomcat handled sendfile request attributes when using the HTTP APR or NIO (Non-Blocking I/O) connector. A malicious web application running on a Tomcat 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). The HTTP NIO connector is used by default in JBoss Enterprise Web Server. (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 Wälde and Alexander Klink as the original reporters of CVE-2011-4858. 3. Solution: All users of JBoss Enterprise Web Server 1.0.2 as provided from the Red Hat Customer Portal are advised to apply this update. 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 Web Server installation (including all applications and configuration files). Tomcat must be restarted for this update to take effect. 4. Bugs fixed (http://bugzilla.redhat.com/): 717013 - CVE-2011-2204 tomcat: password disclosure vulnerability 720948 - CVE-2011-2526 tomcat: security manager restrictions bypass 734868 - CVE-2011-3190 tomcat: authentication bypass and information disclosure 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) 782624 - CVE-2011-3375 tomcat: information disclosure due to improper response and request object recycling 783359 - CVE-2012-0022 tomcat: large number of parameters DoS 5. References: https://www.redhat.com/security/data/cve/CVE-2011-1184.html https://www.redhat.com/security/data/cve/CVE-2011-2204.html https://www.redhat.com/security/data/cve/CVE-2011-2526.html https://www.redhat.com/security/data/cve/CVE-2011-3190.html https://www.redhat.com/security/data/cve/CVE-2011-3375.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://www.redhat.com/security/data/cve/CVE-2012-0022.html https://access.redhat.com/security/updates/classification/#moderate http://tomcat.apache.org/security-6.html https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=webserver&downloadType=securityPatches&version=1.0.2 https://issues.jboss.org/browse/JBPAPP-4873 https://issues.jboss.org/browse/JBPAPP-6133 https://issues.jboss.org/browse/JBPAPP-6852 6. 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) iD8DBQFPunlvXlSAg2UNWIIRAvqnAKCFCNODTaq3A180VLq9ptMsBURTcwCgsJls JsG5zbN8j1JMa8din0vPkdw= =zajO - -----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 auscert@auscert.org.au 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. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBT7sCHe4yVqjM2NGpAQLgbg//fyIMuayGQS0ApILh8Oz2nOcJIFdGPmc1 FnhS0kYJZLOLmk4niD9vUXGplKmW0TQOu5TtOKWrepX8vyfxXeQX2oPkovXXWZvb 1AmIu1+JHjqxiha+osGms4d2cj88dL76SFBCqzWfiHzd1i+MRxCDGHBweHRQYfEd 9OaziEbB3GK/pIXn/uhiUZKj8kgO8g+IsszSnCT4nYdLqSMd5qZzVjTmBKvOl2IQ MvE5Eid3Y67qCFuXpwZSu6GQiyN1KdqYtzQz8rHup9TCrl5/C+ywkRr+UiEQUDxP UkOieQo5i71SvUSoWlhv4XQ9WTmLuGYnUWULboPMQRz6XM4+6CmbRexHZ10kRek3 UCl7neuD+liKEryRGje9zkmHe8r6xxkc6oVXS+dchIzfi9VV5nt6u/AOJOyI7Scm +M1ibG7FemC74FRtvarSh4etpMZYlxgy1/widn8khuKj+HFbmSZCQCIUJAA5eLDn uA/R5VqRMWUwHqVhvM2OfQ83tDP6zaSjzSLAsxKidv/r1Ma9HbxhApzJYPkj+Mcp /bgShVb3huCzYNIzhqy3HAHs1jI2p8muZT8+HBJec562fLy/isTfJSZRkY2J1vQa DJeyUKWa71lqjznttb/zbfgO/ZoopAMqcZm8RXXeC2TGz42Ui4rd0w1uw58goKES JoixwmPpKhw= =YzwC -----END PGP SIGNATURE-----

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