-----BEGIN PGP SIGNED MESSAGE----- =============================================================================== Security Advisory CERT-NL =============================================================================== Author/Source : Don Stikvoort Index : S-97-65 Distribution : World Page : 1 Classification: External Version: 1 Subject : Vulnerability in ifconfig ioctls Date : 27-Aug-97 =============================================================================== By courtesy of Sun Microsystems, Inc. we received information on a vulnerability in ifconfig ioctls. CERT-NL recommends installing recommended patches. ============================================================================== ________________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00152 Date: August 25, 1997 Cross-Ref: Title: Vulnerability in ifconfig ioctls ________________________________________________________________________________ Permission is granted for the redistribution of this Bulletin, so long as the Bulletin is not edited and is attributed to Sun Microsystems. Portions may also be excerpted for re-use in other security advisories so long as proper attribution is included. Any other use of this information without the express written consent of Sun Microsystems is prohibited. Sun Microsystems expressly disclaims all liability for any misuse of this information by any third party. ________________________________________________________________________________ 1. Bulletins Topics Sun announces the release of patches for Solaris 2.5.1, 2.5, 2.4, and 2.3 (SunOS 5.5.1, 5.5, 5.4, and 5.3) which relate to a vulnerability in ifconfig ioctls. Sun strongly recommends that you install the patches listed in section 4 immediately on systems running SunOS 5.5.1, 5.5, 5.4, and 5.3. 2. Who is Affected Vulnerable: SunOS versions 5.5.1, 5.5.1_x86, 5.5, 5.5_x86, 5.4, 5.4_x86, 5.3 Not vulnerable: All other supported versions of SunOS. The vulnerability is fixed in Solaris 2.6. 3. Understanding the Vulnerability The command ifconfig assigns addresses to network interfaces and configures network interface parameters. The use of ifconfig to configure network interface parameters is restricted to superusers. This vulnerability, if exploited, allows non-root attackers to use ifconfig to configure network interface parameters for any network interface on a system. 4. List of Patches The vulnerability in ifconfig ioctls is fixed by the following patches: OS version Patch ID __________ ________ SunOS 5.5.1 103640-09 SunOS 5.5.1_x86 103641-09 SunOS 5.5 103093-14 SunOS 5.5_x86 103094-11 SunOS 5.4 101945-50 SunOS 5.4_x86 101946-44 SunOS 5.3 101318-87 5. Checksum Table The checksum table below shows the BSD checksums (SunOS 5.x: /usr/ucb/sum), SVR4 checksums (SunOS 5.x: /usr/bin/sum), and the MD5 digital signatures for the above-mentioned patches that are available from: These checksums may not apply if you obtain patches from your answer centers. File Name BSD SVR4 MD5 _______________ _________ __________ ________________________________ 103640-09.tar.Z 08357 3832 24559 7663 C79A3D0E0CC610638C60BF25DB625559 103641-09.tar.Z 10615 825 9869 1649 B64D85F18E8B74E0DE251BCAA0AD10DE 103093-14.tar.Z 51571 2293 26450 4586 4EA9F527F219C836740DF51C7374F5E4 103094-11.tar.Z 03030 802 64820 1604 75AB9D22CDB03861B5CA9941752A1F57 101945-50.tar.Z 04413 10909 4073 21817 198EAAAC3D92898622351C43F87E884F 101946-44.tar.Z 10072 5540 36413 11080 92D61AD71C77F56CA1DF6038D644B4F9 101318-87.tar.Z 45783 11292 55998 22584 395AD525FD411904A3BD03E7E02EED10 _______________________________________________________________________________ APPENDICES A. Patches listed in this bulletin are available to all Sun customers via World Wide Web at: Customers with Sun support contracts can also obtain patches from local Sun answer centers and SunSITEs worldwide. B. Sun security bulletins are available via World Wide Web at: C. 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