Note: This is an archival copy of Security Sun Alert 235521 as previously published on http://sunsolve.sun.com. Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1019132.1. |
Category Security Release Phase Resolved 6622866 Date of Resolved Release 13-Jun-2008 A Security Vulnerability in Sun Java System Calendar Server May Allow Denial of Service (DoS) When Access Logging is Enabled 1. ImpactA security vulnerability in Sun Java System Calendar Server may allow a remote unprivileged user to crash the Calendar Server when access logging is enabled. This is a type of Denial of Service (DoS).2. Contributing FactorsSPARC Platform
1. To determine the version of Sun Java System Calendar Server on a system, the following command can be run: $ csversion Sun Java(tm) System Calendar Server 6.3-7.01 (built Feb 20 2008) SunOS palamoor 5.10 Generic_118833-36 sun4u sparc SUNW,A70 2. This issue only affects the Calendar Server when access logging is enabled. To determine if access logging is enabled, look for the config "service.http.commandlog.all" in the configuration file (ics.conf). $ grep service.http.commandlog.all <install_path>/cal/config/ics.conf service.http.commandlog.all = "yes" 3. SymptomsIf this issue is exploited to cause a Denial of Service (DoS) the Calendar Server will no longer be running on the system. This can be determined using a command such as the following, which will produce no output if the process has crashed:$ pgrep cshttpd Depending on the system configuration, the Calendar Server process may leave a crash dump, which may have a stack trace similar to the following if this issue has been exploited: $ pstack core ... ... ----------------- lwp# 8 / thread# 8 -------------------- ff029a6c sock_readable (442f322e, 302e302e, 300a4143, 43455054, 3a205445, 58542f58) + 33c ... ... 4. WorkaroundTo workaround this issue, access logging can be disabled by editing the "ics.conf" file, changing the value for "service.http.commandlog.all" to "no", as follows:$ grep service.http.commandlog.all <install_path>/cal/config/ics.conf service.http.commandlog.all = "no" 5. ResolutionThis issue is addressed in the following releases:SPARC Platform
http://docs.sun.com/source/819-7561/calendarSvr.html For more information on Security Sun Alerts, see 1009886.1. This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements. Copyright 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved. Product Sun ONE Calendar Server 6.0 Patch 1 Sun Java System Calendar Server 6 2004Q2 Sun Java System Calendar Server 6 2005Q1 Sun Java System Calendar Server 6 2005Q4 References121657-23121658-23 121659-23 Attachments This solution has no attachment |
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