===================================================================== CERT-Renater Note d'Information No. 2004/VULN523 _____________________________________________________________________ DATE : 02/12/2004 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Solaris 7, Solaris 8, Solaris 9. ====================================================================== Sun(sm) Alert Notification * Sun Alert ID: 57675 * Synopsis: Security Vulnerability in ping(1M) * Category: Security * Product: Solaris * BugIDs: 4807715 * Avoidance: Patch * State: Resolved * Date Released: 30-Nov-2004 * Date Closed: 30-Nov-2004 * Date Modified: 1. Impact There is a potential buffer overflow in ping(1M) which could result in a local unprivileged user gaining elevated privileges. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 7 without patch [2]118313-01 * Solaris 8 without patch [3]116986-02 * Solaris 9 without patch [4]116774-03 x86 Platform * Solaris 7 without patch [5]118314-01 * Solaris 8 without patch [6]116987-02 * Solaris 9 without patch [7]116775-03 3. Symptoms There are no predictable symptoms that would show the described issue has been exploited. Solution Summary 4. Relief/Workaround To reduce the chances of the described issue from occurring, apply one of the following workarounds: 1. Remove the "set-user-ID" bit from the ping(1M) binary by issuing the following command: # chmod u-s /usr/sbin/ping Note: Removing the "set-user-ID" bit from the ping(1M) utility will prevent unprivileged users from using the ping(1M) command. 2. Enable non-executable program stacks by adding the following lines to the "/etc/system" file and reboot the system: set noexec_user_stack = 1 set noexec_user_stack_log = 1 The above tunable parameters are described in the Solaris Tunable Parameters Reference Manual at: [9]http://docs.sun.com. Note: Although enabling non-executable user stacks makes the likelihood of a successful exploit much smaller, it does not provide 100 percent against exploitation of this vulnerability. This workaround is only effective on sun4u, sun4m, and sun4d architectures (enter "uname -m" to display a systems architecture). This workaround will not work on x86 platforms. 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 7 with patch [10]118313-01 or later * Solaris 8 with patch [11]116986-02 or later * Solaris 9 with patch [12]116774-03 or later x86 Platform * Solaris 7 with patch [13]118314-01 or later * Solaris 8 with patch [14]116987-02 or later * Solaris 9 with patch [15]116775-03 or later 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. 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References 1. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57675-1#top 2. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-118313-01-1 3. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-116986-02-1 4. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-116774-03-1 5. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-118314-01-1 6. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-116987-02-1 7. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-116775-03-1 8. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57675-1#top 9. http://docs.sun.com/ 10. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-118313-01-1 11. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-116986-02-1 12. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-116774-03-1 13. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-118314-01-1 14. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-116987-02-1 15. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-116775-03-1 ====================================================================== ========================================================= 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 + =========================================================