__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Apache HTTP Server mod_access Information Disclosure [ISS Security Alert Summary AS04-11 No. 15422] March 19, 2004 18:00 GMT Number O-103 [REVISED 10 Aug 2004] [REVISED 25 Aug 2004] [REVISED 23 Sep 2004] [REVISED 13 Oct 2004] [REVISED 16 Aug 2005] ______________________________________________________________________________ PROBLEM: A vulnerability exists in the mod_access module of Apache 1.3.29 and earlier, when running big-endian 64-bit platforms. PLATFORM: Apache 1.3.29 and earlier, when running big-endian 64-bit platforms. HP-UX B.11.04 with Virtualvault 4.7, 4.6 or 4.5 Sun Solaris 8 and 9 on the SPARC and x86 platforms DAMAGE: The server does not properly parse Allow/Deny rules using IP addresses without a netmask, which could allow remote attackers to bypass intended access restrictions. SOLUTION: Follow remedy provided on Apache website. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. A remote user could gain unauthorized ASSESSMENT: access to files and directories. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-103.shtml ORIGINAL BULLETIN: http://xforce.iss.net/xforce/xfdb/15422 ADDITIONAL LINKS: http://httpd.apache.org Visit HEWLETT-PACKARD Subscription Service for: HPSBUX01069, SSRT4789 rev.0 Sun Alert ID: 57628 (superceded by 101555) http://www.sunsolve.sun.com/search/printfriendly.do? assetkey=1-26-101555-1 CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2003-0993 ______________________________________________________________________________ REVISION HISTORY: 08/10/04 - added reference to HP Subscription Service for patches available through HPSBUX01069, SSRT4789 rev.0 08/25/04 - added link to Sun Alert ID: 57628 that provides patches for this vulnerability. 09/23/04 - sent announcement that Sun Microsystems has released T-patches for Solaris 8. See their Sun Alert ID: 57628. 10/13/04 - sent announcement that Sun Microsystems has released final patches for Solaris 8. See their Sun Alert ID: 57628. 08/16/05 - Sun Microsystems has superceded Alert ID: 57628 with Alert ID: 101555 and has updated the Contributing Factors and Relief/Workaround sections. Visit ISS X-Force web site for their publication of this information. http://xforce.iss.net/xforce/xfdb/15422 _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Internet Security Systems for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. 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