-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -------------------------------------------------------------------------- CONECTIVA LINUX SECURITY ANNOUNCEMENT - -------------------------------------------------------------------------- PACKAGE : tcpdump SUMMARY : Several vulnerabilities DATE : 2002-05-07 18:23:00 ID : CLA-2002:480 RELEVANT RELEASES : 5.0, 5.1, 6.0, 7.0, 8 - ------------------------------------------------------------------------- DESCRIPTION Tcpdump is a command-line tool for monitoring network traffic. It uses libpcap, a library which provides a portable framework for low-level network monitoring. Both are developed by the same team[1]. This advisory addresses problems found in both projects. tcpdump buffer overflows: during a tcpdump code auditing done by FreeBSD developers, several buffer overflows were discovered[2] in tcpdump versions prior to 3.5. New versions (including 3.6.2) are also vulnerable to another buffer overflow[3] in AFS RPC decoding functions, as pointed out by Nick Cleaton <nickat_private>. These vulnerablities could be exploited by a remote attacker to crash the tcpdump process or even execute arbitrary code as the user running tcpdump (which usually is root). libpcap 0.6 has been audited and a better buffer boundary checking was implemented in several functions, thus making it more safe. This upgrade also fixes a lot of minor bugs[4] in both tcpdump and libpcap. Notice that the number of vulnerabilities and bug fixes which apply to every version of Conectiva Linux varies accordingly to the tcpdump/libpcap versions included in it. This update brings all packages to the most recent version as of this date plus the tcpdump security patches which have not yet been included in the upstream stable version (3.6.2). SOLUTION All tcpdump users should upgrade their packages immediately. If you're only using libpcap, you should also consider upgrading since this new version solves several minor bugs. REFERENCES: 1.http://www.tcpdump.org/ 2.http://www.ciac.org/ciac/bulletins/l-015.shtml 3.ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:48.tcpdump.asc 3.http://www.tcpdump.org/tcpdump-changes.txt DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES ftp://atualizacoes.conectiva.com.br/5.0/i386/arpwatch-2.1a11-9U50_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/libpcap-0.6.2-1U50_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/libpcap-devel-0.6.2-1U50_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/libpcap-devel-static-0.6.2-1U50_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/i386/tcpdump-3.6.2-1U50_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/tcpdump-3.6.2-1U50_1cl.src.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/arpwatch-2.1a11-9U51_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/libpcap-0.6.2-1U51_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/libpcap-devel-0.6.2-1U51_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/libpcap-devel-static-0.6.2-1U51_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/i386/tcpdump-3.6.2-1U51_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/tcpdump-3.6.2-1U51_1cl.src.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/arpwatch-2.1a11-9U60_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/libpcap-0.6.2-1U60_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/libpcap-devel-0.6.2-1U60_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/libpcap-devel-static-0.6.2-1U60_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/RPMS/tcpdump-3.6.2-1U60_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/tcpdump-3.6.2-1U60_1cl.src.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/arpwatch-2.1a11-9U70_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/libpcap-0.6.2-1U70_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/libpcap-devel-0.6.2-1U70_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/libpcap-devel-static-0.6.2-1U70_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/RPMS/tcpdump-3.6.2-1U70_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/tcpdump-3.6.2-1U70_1cl.src.rpm ftp://atualizacoes.conectiva.com.br/8/RPMS/libpcap-0.6.2-4U8_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/8/RPMS/libpcap-devel-0.6.2-4U8_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/8/RPMS/libpcap-devel-static-0.6.2-4U8_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/8/RPMS/tcpdump-3.6.2-3U8_1cl.i386.rpm ftp://atualizacoes.conectiva.com.br/8/SRPMS/libpcap-0.6.2-4U8_1cl.src.rpm ftp://atualizacoes.conectiva.com.br/8/SRPMS/tcpdump-3.6.2-3U8_1cl.src.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 iD8DBQE82EXm42jd0JmAcZARApLoAKCthLJH/QNa2TlwAV+EK+xzMVlSeQCgr7FZ HG5wOhKACPmu8DFvQMsyA3w= =IAOF -----END PGP SIGNATURE-----
This archive was generated by hypermail 2b30 : Tue May 07 2002 - 14:32:03 PDT