__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Samba - Arbitrary File Access Vulnerability [Debian Security Advisory DSA-600-1] December 1, 2004 17:30 GMT Number P-044 [REVISED 20 Jan 2005] [REVISED 14 Jun 2005] ______________________________________________________________________________ PROBLEM: Samba versions 2.2.x through 2.2.11 and 3.0.x through 3.0.2a could allow a unauthorized access to files outside of the share's defined path, caused by a vulnerability in DOS pathname conversion routines. PLATFORM: Samba versions 2.2.x through 2.2.11 and 3.0.x through 3.0.2a Debian GNU/Linux 3.0 (woody) Sun Java Desktop Systems (JDS), Samba SPARC Platform Solaris 9 without patch 114684-03 Solaris 10 without patch 119757-01 x86 Platform Solaris 9 without patch 114685-03 Solaris 10 without patch 119758-01 DAMAGE: A remote attacker may be able to gain access to files which exist outside of the share's defined path. Such files must still be readable by the account used for the connection. SOLUTION: Samba 2.2.12 has been released to address this issue in the 2.2.x release series. A patch for Samba 3.0.5 and earlier is available as well. Also check for vendor supplied updated packages. ______________________________________________________________________________ VULNERABILITY The risk is LOW. A remote attacker may be able to gain access to ASSESSMENT: files which exist outside of the share's defined path. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-044.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2004/dsa-600 ADDITIONAL LINKS: Sun Security Alert 57694 http://www.sunsolve.sun.com/search/document.do?assetkey= 1-26-57694-1&searchclause=%22category:security%22%20%22 availability,%20security%22 Sun Alert ID: 101584 (formerly Sun Alert ID: 57664) http://www.sunsolve.sun.com/search/document.do?assetkey=1 -26-101584-1&searchclause=%22category:security%22%20%22 availability,%20security%22 CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2004-0815 ______________________________________________________________________________ REVISION HISTORY: 01/20/2005 - added link to Sun Security Alert 57694 that provides patches for this vulnerability. 06/14/2005 - added a link to Sun Security Alert 101584 which replaces Sun Alert ID: 57664. [***** Start Debian Security Advisory DSA-600-1 *****] Debian Security Advisory DSA-600-1 samba -- arbitrary file access Date Reported: 07 Oct 2004 Affected Packages: samba Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CAN-2004-0815. More information: A vulnerability has been discovered in samba, a commonly used LanManager-like file and printer server for Unix. A remote attacker may be able to gain access to files which exist outside of the share's defined path. Such files must still be readable by the account used for the connection, though. For the stable distribution (woody) this problem has been fixed in version 2.2.3a-14.1. In the unstable (sid) and testing (sarge) distributions this problem was not present. We recommend that you upgrade your samba packages. Fixed in: Debian GNU/Linux 3.0 (woody) Source: http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1.dsc http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1.diff.gz http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a.orig.tar.gz Architecture-independent component: http://security.debian.org/pool/updates/main/s/samba/samba-doc_2.2.3a-14.1_ all.deb Alpha: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _alpha.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ alpha.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a- 14.1_alpha.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_alpha.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1 _alpha.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_ alpha.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_alpha.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_alpha.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_alpha.deb ARM: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _arm.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ arm.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _arm.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_arm.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1_ arm.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_arm.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_arm.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_arm.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_arm.deb Intel IA-32: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _i386.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ i386.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _i386.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_i386.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1 _i386.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_ i386.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_i386.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_i386.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _ia64.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ ia64.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _ia64.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_ia64.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1_ ia64.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_ ia64.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_ia64.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_ia64.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_ia64.deb HPPA: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _hppa.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1 _hppa.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _hppa.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_hppa.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1_ hppa.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_hppa.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_hppa.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_hppa.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_hppa.deb Motorola 680x0: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _m68k.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ m68k.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _m68k.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_m68k.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1 _m68k.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_ m68k.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_m68k.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_m68k.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_m68k.deb Big endian MIPS: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _mips.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ mips.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _mips.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_mips.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1_ mips.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_mips.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_mips.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_mips.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_mips.deb Little endian MIPS: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _mipsel.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ mipsel.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _mipsel.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_mipsel.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1_ mipsel.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_ mipsel.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_mipsel.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_mipsel.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _powerpc.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ powerpc.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _powerpc.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_powerpc.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1_ powerpc.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_ powerpc.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_powerpc.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_powerpc.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _s390.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ s390.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _s390.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_s390.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1_ s390.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_ s390.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_s390.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_s390.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/s/samba/libpam-smbpass_2.2.3a-14.1 _sparc.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient_2.2.3a-14.1_ sparc.deb http://security.debian.org/pool/updates/main/s/samba/libsmbclient-dev_2.2.3a-14.1 _sparc.deb http://security.debian.org/pool/updates/main/s/samba/samba_2.2.3a-14.1_sparc.deb http://security.debian.org/pool/updates/main/s/samba/samba-common_2.2.3a-14.1_ sparc.deb http://security.debian.org/pool/updates/main/s/samba/smbclient_2.2.3a-14.1_ sparc.deb http://security.debian.org/pool/updates/main/s/samba/smbfs_2.2.3a-14.1_sparc.deb http://security.debian.org/pool/updates/main/s/samba/swat_2.2.3a-14.1_sparc.deb http://security.debian.org/pool/updates/main/s/samba/winbind_2.2.3a-14.1_sparc.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-600-1 *****] 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. 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