-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -------------------------------------------------------------------------- CONECTIVA LINUX SECURITY ANNOUNCEMENT - -------------------------------------------------------------------------- PACKAGE : openssh SUMMARY : Remote vulnerabilities in openssh DATE : 2001-10-24 18:20:00 ID : CLA-2001:431 RELEVANT RELEASES : 5.0, prg graficos, ecommerce, 5.1, 6.0, 7.0 - ------------------------------------------------------------------------- DESCRIPTION OpenSSH is a tool to access remote machines via a cryptographic connection. Three vulnerabilities are being addressed by this advisory: 1) Markus Friedl reported [1] a vulnerability [2] in OpenSSH that could allow users to circumvent system policy and login from disallowed source IP addresses. This only affects sites using the "from=" key file option in combination with both RSA and DSA keys in the ~/.ssh/authorized_keys2 file. If the key with the "from=" option is immediattely followed by a key of a different type then the options for this second key are applied to both keys. If this second key doesn't have the "from=" option, for example, this would effectively remove this option from the first key. 2) Peter W. reported [5] that the sftp subsystem in openssh 2.5 and 2.9 is not subject to "command=" restrictions in the ~/.ssh/authorized_keys2 file. Users could bypass these restrictions if they used sftp, which was enabled by default on our releases of this package. New installs will have this subsystem disabled by default (upgrades won't touch this setting). 3) For Conectiva Linux <= 6.0 this update also fixes the older cookie removal [3] vulnerability, announced [4] by zen-parse, where an user could trick ssh into removing any file called "cookies". This only affects systems with X11 forwarding enabled, which is not the default in our packages. SOLUTION It is recommended that all OpenSSH users upgrade their packages. Please note that this upgrade will restart the service if it already running. REFERENCES 1. http://www.securityfocus.com/archive/1/216702 2. http://www.securityfocus.com/bid/3369 3. http://www.securityfocus.com/bid/2825 4. http://www.securityfocus.com/archive/1/188450 5. http://www.securityfocus.com/archive/1/214921 DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/openssh-2.9.9p2-2U50_2cl.src.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-askpass-gnome-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-clients-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-askpass-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-server-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/openssh-2.9.9p2-2U51_2cl.src.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-askpass-gnome-2.9.9p2-2U51_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-server-2.9.9p2-2U51_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-2.9.9p2-2U51_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-clients-2.9.9p2-2U51_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-askpass-2.9.9p2-2U51_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/openssh-2.9.9p2-2U60_2cl.src.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-askpass-2.9.9p2-2U60_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-askpass-gnome-2.9.9p2-2U60_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-2.9.9p2-2U60_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-clients-2.9.9p2-2U60_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-server-2.9.9p2-2U60_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/openssh-2.9.9p2-2U70_2cl.src.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssh-askpass-gnome-2.9.9p2-2U70_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssh-server-2.9.9p2-2U70_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssh-askpass-2.9.9p2-2U70_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssh-2.9.9p2-2U70_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/openssh-clients-2.9.9p2-2U70_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/openssh-2.9.9p2-2U50_2cl.src.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-askpass-gnome-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-clients-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-askpass-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-server-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/openssh-2.9.9p2-2U50_2cl.src.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-askpass-gnome-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-clients-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-askpass-2.9.9p2-2U50_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-server-2.9.9p2-2U50_2cl.i386.rpm ADDITIONAL INSTRUCTIONS Users of Conectiva Linux version 6.0 or higher may use apt to perform upgrades of RPM packages: - add the following line to /etc/apt/sources.list if it is not there yet (you may also use linuxconf to do this): rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates (replace 6.0 with the correct version number if you are not running CL6.0) - run: apt-get update - after that, execute: apt-get upgrade Detailed instructions reagarding the use of apt and upgrade examples can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en - ------------------------------------------------------------------------- All packages are signed with Conectiva's GPG key. The key and instructions on how to import it can be found at http://distro.conectiva.com.br/seguranca/chave/?idioma=en Instructions on how to check the signatures of the RPM packages can be found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en - ------------------------------------------------------------------------- All our advisories and generic update instructions can be viewed at http://distro.conectiva.com.br/atualizacoes/?idioma=en - ------------------------------------------------------------------------- subscribe: conectiva-updates-subscribeat_private unsubscribe: conectiva-updates-unsubscribeat_private -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE71yK742jd0JmAcZARAkm7AJ0Ygz1sGmHU20wB5lz7ELRWV9ZqTQCfZqRO eBsVVSKa1lnM9+jL6V3VtMc= =GjzY -----END PGP SIGNATURE-----
This archive was generated by hypermail 2b30 : Wed Oct 24 2001 - 13:38:28 PDT