===================================================================== CERT-Renater Note d'Information No. 2008/VULN308 _____________________________________________________________________ DATE : 14/08/2008 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Systems running Sun Java System Web Proxy Server 4.0. ====================================================================== http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-240327-1 ______________________________________________________________________ Solution Type: Sun Alert Solution 240327 : A Security Vulnerability in the ftp Subsystem of Sun Java System Web Proxy Server 4.0 May Lead to a Denial of Service (DoS) Bug ID: 6590476 Product Sun Java System Web Proxy Server 4.0 Date of Resolved Release: 12-Aug-2008 SA Document Body Security vulnerability in the FTP subsystem of Sun Java System Web Proxy Server 4.0 1. Impact A Security vulnerability in the FTP subsystem of Sun Java System Web Proxy Server 4.0 may allow a local or remote unprivileged user to prevent the proxy server from accepting new connections, resulting in a Denial of Service (DoS) to the proxy server. Sun acknowledges, with thanks, Joxean Koret for bringing this issue to our attention. 2. Contributing Factors This issues can occur in the following releases: SPARC Platform * Sun Java System Web Proxy Server 4.0 through 4.0.5 without Service Pack 6 * Sun Java System Web Proxy Server 4.0 through 4.0.5 without patch 120981-14 x86 Platform * Sun Java System Web Proxy Server 4.0 through 4.0.5 without Service Pack 6 * Sun Java System Web Proxy Server 4.0 through 4.0.5 without patch 120982-14 Linux * Sun Java System Web Proxy Server 4.0 through 4.0.5 without Service Pack 6 * Sun Java System Web Proxy Server 4.0 through 4.0.5 without patch 120983-14 HP-UX * Sun Java System Web Proxy Server 4.0 through 4.0.5 without Service Pack 6 * Sun Java System Web Proxy Server 4.0 through 4.0.5 without patch 123532-04 Windows * Sun Java System Web Proxy Server 4.0 through 4.0.5 without Service Pack 6 * Sun Java System Web Proxy Server 4.0 through 4.0.5 without patch 126325-04 To determine the version of Sun Java System Web Proxy Sever, run the following command: $ /bin/proxy/bin/proxyd -v Sun Microsystems, Inc. Sun Java System Web Proxy Server 4.0.6 B05/12/2007 13:24 (Where is the installation directory of the Proxy Server). 3. Symptoms Should the described issue occur, Proxy server stops accepting new connections with the following error message in the proxy server instance's "access" log file: [03/Mar/2008:02:10:35] failure (32372): HTTP3069: Error accepting connection (PR_PROC_DESC_TABLE_FULL_ERROR: file descriptor table full) 4. Workaround If this issue has been exploited on a server, it may be possible to recover from the Denial of Service (DoS) condition by restarting the server. This can be done by using the following command: $/ is the installation directory of the Proxy Server, and is the Proxy Server instance directory). 5. Resolution This issue is addressed in the following releases: SPARC Platform * Sun Java System Web Proxy Server 4.0 through 4.0.5 with Service Pack 6 or later * Sun Java System Web Proxy Server 4.0 through 4.0.5 with patch 120981-14 or later x86 Platform * Sun Java System Web Proxy Server 4.0 through 4.0.5 with Service Pack 6 or later * Sun Java System Web Proxy Server 4.0 through 4.0.5 with patch 120982-14 or later Linux * Sun Java System Web Proxy Server 4.0 through 4.0.5 with Service Pack 6 or later * Sun Java System Web Proxy Server 4.0 through 4.0.5 with patch 120983-14 orlater HP-UX * Sun Java System Web Proxy Server 4.0 through 4.0.5 with Service Pack 6 or later * Sun Java System Web Proxy Server 4.0 through 4.0.5 with patch 123532-04 or later Windows * Sun Java System Web Proxy Server 4.0 through 4.0.5 with Service Pack 6 or later * Sun Java System Web Proxy Server 4.0 through 4.0.5 without patch 126325-04 or later Sun Java System Web Proxy Server 4.0.7 is available for download at: https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_SMI-Site/ en_US/-/USD/ViewProductDetail-Start?ProductRef=SJPrxySrv-4.0.7-OTH-G-F @CDS-CDS_SMI For more information on Security Sun Alerts, see Technical Instruction ID 213557. 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 ====================================================================== ========================================================= Les serveurs de référence du CERT-Renater http://www.urec.fr/securite http://www.cru.fr/securite http://www.renater.fr ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 151 bd de l'Hopital | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================