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Message-ID: <20050125153015.A1753@caldera.com> From: please_reply_to_security at sco.com (please_reply_to_security@....com) Subject: OpenServer 5.0.6 OpenServer 5.0.7 : wu-ftp local users can bypass access restrictions -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SCO Security Advisory Subject: OpenServer 5.0.6 OpenServer 5.0.7 : wu-ftp local users can bypass access restrictions Advisory number: SCOSA-2005.6 Issue date: 2005 January 25 Cross reference: sr889579 fz528958 erg712568 CAN-2004-0148 ______________________________________________________________________________ 1. Problem Description wu-ftpd 2.6.2 and earlier, with the restricted-gid option enabled, allows local users to bypass access restrictions by changing the permissions to prevent access to their home directory, which causes wu-ftpd to use the root directory instead. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0148 to this issue. 2. Vulnerable Supported Versions System Binaries ---------------------------------------------------------------------- OpenServer 5.0.5 Not vulnerable OpenServer 5.0.6 /etc/ftpd OpenServer 5.0.7 /etc/ftpd 3. Solution The proper solution is to install the latest packages. 4. OpenServer 5.0.6 4.1 First install oss646b or later 4.2 Location of oss646c ftp://ftp.sco.com/pub/openserver5/oss646c/ 4.3 Verification of oss646c MD5 (VOL.000.000) = f19b6c6949f615316bfb075d249989e8 MD5 (VOL.000.001) = 341ff8553aecd2c7b0c2beaf83030d0f MD5 (VOL.000.002) = 6e46708ad8029e12280d4f9ac60ab814 MD5 (VOL.000.003) = 2868b64a6a6db742adb3b485be645d7e MD5 (VOL.000.004) = 1696fe1db9bb063827ee5e76e58dff84 MD5 (VOL.000.005) = f39da342f8af72fcaccdf478dca04109 MD5 (VOL.000.006) = 2b31611c8af7d2e7910d6e8e3cf701a6 MD5 (VOL.000.007) = d0175c0f4e3ed29435b1eab95609f8f4 MD5 (VOL.000.008) = aa9e8a525c341fed077f981b1dacb486 MD5 (VOL.000.009) = 8e023af67b57507824406bdda322079a MD5 (VOL.000.010) = 2b46e8adba8ae0b64109f2069da978a2 4.4 Location of Fixed Binaries ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.6 4.5 Verification MD5 (VOL.000.000) = 713bab43a71937e8d9ab015de1335a26 md5 is available for download from ftp://ftp.sco.com/pub/security/tools 4.6 Installing Fixed Binaries Upgrade the affected binaries with the following sequence: 1) Download the VOL* files to a directory 2) Run the custom command, specify an install from media images, and specify the directory as the location of the images. 5. OpenServer 5.0.7 5.1 Location of Fixed Binaries ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.6 The fixes are also available in SCO OpenServer Release 5.0.7 Maintenance Pack 3 or later. See http://www.sco.com/support/update/download/osr507list.html. 5.2 Verification MD5 (VOL.000.000) = 713bab43a71937e8d9ab015de1335a26 md5 is available for download from ftp://ftp.sco.com/pub/security/tools 5.3 Installing Fixed Binaries Upgrade the affected binaries with the following sequence: 1) Download the VOL* files to a directory 2) Run the custom command, specify an install from media images, and specify the directory as the location of the images. 6. References Specific references for this advisory: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0148 SCO security resources: http://www.sco.com/support/security/index.html SCO security advisories via email http://www.sco.com/support/forums/security.html This security fix closes SCO incidents sr889579 fz528958 erg712568. 7. Disclaimer SCO is not responsible for the misuse of any of the information we provide on this website and/or through our security advisories. Our advisories are a service to our customers intended to promote secure installation and use of SCO products. 8. Acknowledgments SCO would like to thank Glenn Stewart ______________________________________________________________________________ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (SCO/UNIX_SVR5) iD8DBQFB9scCaqoBO7ipriERApr6AJ4neuOABh8P56sZqup/nczeJU1CmACfbweU 9lBWAfSZmBP9vDgoIi4Egmk= =GUl/ -----END PGP SIGNATURE-----
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