-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ Caldera International, Inc. Security Advisory Subject: Linux - webmin root account leak Advisory number: CSSA-2001-019.1 Issue date: 2001 May, 29 Last change: 2001 July, 2 Cross reference: ______________________________________________________________________________ 1. Problem Description When starting system daemons from the webmin webfrontend, webmin does not clear its environment variables. Since these variables contain the authorization of the administrator, any daemon gets these variables. A simple attack would be to write a CGI scripts which just dumps all environment variables and wait for the administrator to restart apache using webmin. There is also a environment variable leakage in cron script creation, and a file viewing vulnerability, which makes an upgrade necessary. This additional CSSA releases fixed packages for the OpenLinux 3.1 series of products. 2. Vulnerable Versions System Package ----------------------------------------------------------- OpenLinux 2.3 not vulnerable OpenLinux eServer 2.3.1 All packages previous to and OpenLinux eBuilder webmin-0.749-7 OpenLinux eDesktop 2.4 All packages previous to webmin-0.78-11 OpenLinux 3.1 Server All packages previous to webmin-0.87-2 OpenLinux 3.1 Workstation All packages previous to webmin-0.87-2 3. Solution Workaround none The proper solution is to upgrade to the latest packages. 4. OpenLinux 2.3 not vulnerable 5. OpenLinux eServer 2.3.1 and OpenLinux eBuilder for ECential 3.0 5.1 Location of Fixed Packages The upgrade packages can be found on Caldera's FTP site at: ftp://ftp.caldera.com/pub/updates/eServer/2.3/current/RPMS/ The corresponding source code package can be found at: ftp://ftp.caldera.com/pub/updates/eServer/2.3/current/SRPMS 5.2 Verification 8b978c8a6a6bf56da5f3eb56a2768e6b RPMS/webmin-0.749-7.i386.rpm dad6505cde59262187828d9d2b6fe0e7 SRPMS/webmin-0.749-7.src.rpm 5.3 Installing Fixed Packages Upgrade the affected packages with the following commands: /etc/rc.d/init.d/webmin stop rpm -Fvh webmin*i386.rpm /etc/rc.d/init.d/webmin start 6. OpenLinux eDesktop 2.4 6.1 Location of Fixed Packages The upgrade packages can be found on Caldera's FTP site at: ftp://ftp.caldera.com/pub/updates/eDesktop/2.4/current/RPMS/ The corresponding source code package can be found at: ftp://ftp.caldera.com/pub/updates/eDesktop/2.4/current/SRPMS 6.2 Verification cd03a53b35407547b5f4b339fcb60fda RPMS/webmin-0.78-11.i386.rpm 13d2b8d05eb94f7b501c231e33b06e8d SRPMS/webmin-0.78-11.src.rpm 6.3 Installing Fixed Packages Upgrade the affected packages with the following commands: /etc/rc.d/init.d/webmin stop rpm -Fvh webmin*i386.rpm /etc/rc.d/init.d/webmin start 7. OpenLinux 3.1 Server 7.1 Location of Fixed Packages The upgrade packages can be found on Caldera's FTP site at: ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Server/current/RPMS/ The corresponding source code package can be found at: ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Server/current/SRPMS 7.2 Verification 10e9f27eb7e61d9d89880d8136500264 RPMS/webmin-0.87-2.i386.rpm 5d99e6b87e9c3d58cca778ecd25a5a03 SRPMS/webmin-0.87-2.src.rpm 7.3 Installing Fixed Packages Upgrade the affected packages with the following commands: /etc/rc.d/init.d/webmin stop rpm -Fvh webmin*i386.rpm /etc/rc.d/init.d/webmin start or start kcupdate, the Caldera OpenLinux Update Manager. 8. OpenLinux 3.1 Workstation 8.1 Location of Fixed Packages The upgrade packages can be found on Caldera's FTP site at: ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Workstation/current/RPMS/ The corresponding source code package can be found at: ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Workstation/current/SRPMS 8.2 Verification 10e9f27eb7e61d9d89880d8136500264 RPMS/webmin-0.87-2.i386.rpm 5d99e6b87e9c3d58cca778ecd25a5a03 SRPMS/webmin-0.87-2.src.rpm 8.3 Installing Fixed Packages Upgrade the affected packages with the following commands: /etc/rc.d/init.d/webmin stop rpm -Fvh webmin*i386.rpm /etc/rc.d/init.d/webmin start or start kcupdate, the Caldera OpenLinux Update Manager. 9. References This and other Caldera security resources are located at: http://www.caldera.com/support/security/index.html This security fix closes Caldera's internal Problem Report 10039. 10.Disclaimer Caldera International, Inc. 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 Caldera International products. 11.Acknowledgements: Caldera International wants to thank J. Nick Koston for reporting the problem and Jamie Cameron for providing a timely fix. ______________________________________________________________________________ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE7QHpk18sy83A/qfwRAjLzAKCwnp7VcgLoj9Kju6kuGhK48oMnBwCgvFxj 7EbXIznf+7q7/rPkdKErmF4= =ipv1 -----END PGP SIGNATURE-----