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Date: Mon, 22 Sep 2003 16:23:35 -0300 From: Conectiva Updates <secure@...ectiva.com.br> To: conectiva-updates@...aleguas.conectiva.com.br, lwn@....net, bugtraq@...urityfocus.com, security-alerts@...uxsecurity.com, linsec@...ts.seifried.org Subject: [CLA-2003:748] Conectiva Security Announcement - wu-ftpd -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -------------------------------------------------------------------------- CONECTIVA LINUX SECURITY ANNOUNCEMENT - -------------------------------------------------------------------------- PACKAGE : wu-ftpd SUMMARY : Command execution remote vulnerability DATE : 2003-09-22 16:22:00 ID : CLA-2003:748 RELEVANT RELEASES : 7.0, 8, 9 - ------------------------------------------------------------------------- DESCRIPTION "wu-ftpd" is one of the ftp servers available in Conectiva Linux and other linux distributions. This update fixes a vulnerability[1] in the way wu-ftpd uses the "conversion" feature, which is used mostly to (un)compress files. The scenario where this vulnerability can be exploited varies depending on the server configuration, but in the worst case, an attacker with access (valid account or anonymous login) to the FTP server can execute arbitrary commands by using specially crafted file names. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-1999-0997 to this issue[2]. Additionally, the anonftp package of Conectiva Linux 9 is being updated to fix a problem[3] which is preventing the use of some commands because of missing libraries in the chroot environment used to serve anonymous logins. SOLUTION All wu-ftpd users should upgrade their packages. There is no need to restart the service after the upgrade because wu-ftpd is started from inetd. The administrator might want to, however, shut down all current connections which would still be using the vulnerable copy to avoid a possible abuse by currently connected users. REFERENCES: 1.http://www.securityfocus.com/bid/2240 2.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0997 3.http://bugzilla.conectiva.com.br/show_bug.cgi?id=8992 UPDATED PACKAGES ftp://atualizacoes.conectiva.com.br/7.0/RPMS/wu-ftpd-2.6.1-6U70_4cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/wu-ftpd-2.6.1-6U70_4cl.src.rpm ftp://atualizacoes.conectiva.com.br/8/RPMS/wu-ftpd-2.6.1-8U80_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/8/SRPMS/wu-ftpd-2.6.1-8U80_2cl.src.rpm ftp://atualizacoes.conectiva.com.br/9/RPMS/wu-ftpd-2.6.2-13985U90_2cl.i386.rpm ftp://atualizacoes.conectiva.com.br/9/RPMS/anonftp-3.0-22686U90_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/9/SRPMS/wu-ftpd-2.6.2-13985U90_2cl.src.rpm ftp://atualizacoes.conectiva.com.br/9/SRPMS/anonftp-3.0-22686U90_1cl.src.rpm ADDITIONAL INSTRUCTIONS The apt tool can be used to perform RPM packages upgrades: - 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 - ------------------------------------------------------------------------- Copyright (c) 2003 Conectiva Inc. http://www.conectiva.com - ------------------------------------------------------------------------- subscribe: conectiva-updates-subscribe@...aleguas.conectiva.com.br unsubscribe: conectiva-updates-unsubscribe@...aleguas.conectiva.com.br -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE/b0w242jd0JmAcZARAjebAJ49RjTHUT0eKEB0WkL/2S56jya7BACeORQn V47JK7rrnbQiGOI+RMZv3q4= =JwLO -----END PGP SIGNATURE-----
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