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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0872 -- Sun Alert Notification Security Issue Involving the tcsh(1) ls-F builtin on Solaris 8 24 December 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: tcsh(1) Publisher: Sun Microsystems Operating System: Solaris 8 Platform: IA-32 SPARC Impact: Increased Privileges Create Arbitrary Files Delete Arbitrary Files Access Required: Existing Account Comment: Original bulletin available at: http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F57455 - --------------------------BEGIN INCLUDED TEXT-------------------- DOCUMENT ID: 57455 SYNOPSIS: Security Issue Involving the tcsh(1) ls-F builtin on Solaris 8 DETAIL DESCRIPTION: Sun(sm) Alert Notification * Sun Alert ID: 57455 * Synopsis: Security Issue Involving the tcsh(1) ls-F builtin on Solaris 8 * Category: Security * Product: Solaris * BugIDs: 4599390 * Avoidance: Patch * State: Resolved * Date Released: 22-Dec-2003 * Date Closed: 22-Dec-2003 * Date Modified: 1. Impact A local unprivileged user may be able to create or remove files or gain privileges of another user, possibly root, if the tcsh(1) builtin command ls-F is used. The files created or removed and privileges possibly gained would depend on the privileges and user-ID of the process that executed the tcsh(1) ls-F builtin command. 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 8 without patch 110943-02 x86 Platform * Solaris 8 without patch 110944-02 Note: Solaris 7 and Solaris 9 are not affected by this issue. 3. Symptoms There are no reliable symptoms that would show the described issue has been exploited to gain unauthorized elevated privileges to a host. SOLUTION SUMMARY: 4. Relief/Workaround To prevent this issue from occurring, do not utilize the tcsh(1) ls-F builtin directly and avoid any tcsh(1) functionality which uses the ls-F builtin such as filename completion (done by typing "^D"). 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 8 with patch 110943-02 or later x86 Platform * Solaris 8 with patch 110944-02 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. 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. 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If you have any questions or need further information, please contact them directly. 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 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 iQCVAwUBP+kEpCh9+71yA2DNAQGQlAP/b/5z5QVDouFKjVhjFxwLxV2HfbR2isZ8 0FTqpwwz5E5APdQK0NPX//aH+6bFfowfLI6+Q56Q54Q7It8zHxaIOqZBCZt7lB1q 6W1IAUZZLdd02DfjcFK1Mt5KO/ABHzthqqDA++DyR7oQkgPoe+2pUOiA7Df89xcc wRGga7pRL98= =awDm -----END PGP SIGNATURE-----