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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0653 -- Sun Alert Notification 57628 Updated Patches Fix Security Vulnerabilities in the Apache Web Server and Apache Modules 14 October 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Solaris Publisher: Sun Microsystems Operating System: Solaris 9 Solaris 8 Platform: SPARC IA-32 Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated CVE Names: CAN-2004-0492 CAN-2004-0174 CAN-2003-0993 CAN-2003-0987 CAN-2003-098 CAN-2003-0020 Ref: ESB-2004.0532 Original Bulletin URL: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57628-1 - --------------------------BEGIN INCLUDED TEXT-------------------- Sun(sm) Alert Notification * Sun Alert ID: 57628 * Synopsis: Security Vulnerabilities in the Apache Web Server and Apache Modules * Category: Security * Product: Solaris * BugIDs: 5048900, 5069902 * Avoidance: Patch * State: Resolved * Date Released: 24-Aug-2004, 12-Oct-2004 * Date Closed: 12-Oct-2004 * Date Modified: 09-Sep-2004, 22-Sep-2004, 12-Oct-2004 1. Impact A local or remote unprivileged user may be able execute arbitrary code on Solaris 8 or Solaris 9 systems running Apache with privileges of the Apache HTTP process, due to several security vulnerabilities in the Apache Web Server and Apache Web Server modules. The Apache HTTP process normally runs as the unprivileged uid "nobody" (uid 60001). The ability to execute arbitrary code as the unprivileged uid "nobody" may lead to modified web content, denial of service, or further compromise. These issues are described at the following sites: The Change Log for Apache 1.3, at [2]http://www.apache.org/dist/httpd/CHANGES_1.3 CAN-2003-0987: "mod_digest issue" at [3]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0987 CAN-2003-0020: "filtering of data sent to errorlog" at [4]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0020 CAN-2004-0174: "possible denial of service" at [5]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0174 CAN-2003-0993: "mod_access on 64-bit platforms" at [6]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0993 CAN-2004-0492: "buffer overflow in mod_proxy" at [7]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0492 Note that Apache 1.3.31 addresses the first four of these five security vulnerabilities. Additional changes were made to address CAN-2004-0492 in Sun's version of Apache 1.3.31. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 8 without patch [8]116973-01 * Solaris 9 without patch [9]113146-05 x86 Platform * Solaris 8 without patch [10]116974-01 * Solaris 9 without patch [11]114145-04 A system is only vulnerable to this issue if Apache Web Server has been configured and is running on the system. The following command can be executed to check if the Apache(1M) httpd daemon is running on the system: $ /usr/bin/ps -ef | grep httpd nobody 103892 102307 0 Jan 20 ? 0:27 /usr/apache/bin/httpd Apache was not bundled with Solaris prior to Solaris 8. However, customers who have built and/or installed a vulnerable version of Apache on any version of Solaris are at risk. See the Apache web site to download the latest version of Apache which addresses these issues. Note also that CAN-2004-0492 is not fixed in a shipped version of Apache yet. The vulnerabilities CAN-2003-0020, CAN-2004-0174, and CAN-2003-0993 are present in Apache Web Server versions 1.3 through 1.3.29. The vulnerability CAN-2003-098 is present in Apache Web Server versions 1.3 through 1.3.30. The vulnerability CAN-2004-0492 is present in Apache Web Server versions 1.3 through 1.3.31. CAN-2004-0492 is addressed in the Apache Web Server shipped in the patches described in this Sun Alert. In order to determine the version of Apache installed, the following command can be executed: $ /usr/apache/bin/httpd -v Server version: Apache/1.3.27 (Unix) Server built: Nov 1 2002 16:16:41 3. Symptoms There are no reliable symptoms that would indicate any of the described issues have been exploited to gain unauthorized uid "nobody" access to a host. Solution Summary [12]Top 4. Relief/Workaround There is no workaround. Please see the "Resolution" section below. 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 8 with patch [13]116973-01 or later * Solaris 9 with patch [14]113146-05 or later x86 Platform * Solaris 8 with patch [15]116974-01 or later * Solaris 9 with patch [16]114145-04 or later Change History 12-Oct-2004: * Final patches added for Solaris 8 resolution; update Contributing Factors and Resolution sections; re-release as "Resolved" 22-Sep-2004: * T-Patches added for Solaris 8 to "Relief/Workaround" 09-Sep-2004: * Patches released/added for Solaris 9 resolution, update Contributing Factors and Resolution sections 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 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved. References 1. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57628-1#top 2. http://www.apache.org/dist/httpd/CHANGES_1.3 3. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0987 4. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0020 5. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0174 6. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0993 7. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0492 8. http://sunsolve.sun.com/search/document.do?assetkey=1-21-116973-01-1 9. http://sunsolve.sun.com/search/document.do?assetkey=1-21-113146-05-1 10. http://sunsolve.sun.com/search/document.do?assetkey=1-21-116974-01-1 11. http://sunsolve.sun.com/search/document.do?assetkey=1-21-114145-04-1 12. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57628-1#top 13. http://sunsolve.sun.com/search/document.do?assetkey=1-21-116973-01-1 14. http://sunsolve.sun.com/search/document.do?assetkey=1-21-113146-05-1 15. http://sunsolve.sun.com/search/document.do?assetkey=1-21-116974-01-1 16. http://sunsolve.sun.com/search/document.do?assetkey=1-21-114145-04-1 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== 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 iQCVAwUBQW272Ch9+71yA2DNAQJckQP+Om6Fv2Voxlr25nkUGrImKKMjgRNPZNRq iYPgH6MkXFySRujfgtxuhfnmHEH4LPa7Z6KqReSNAfauA+VCtNlw2VgC7atAcVwv 6n81Ziet2G9FrOaARSXHvbJWs5I+6if94vCRVnLELdzxfebaQNt+1XSPwyetBmWJ V3n8+dj9R2E= =FR6G -----END PGP SIGNATURE-----