Buffer overflow in sudo earlier than 1.6.3p6 allows local users to gain root privileges.
http://www.redhat.com/support/errata/RHSA-2001-019.html
http://www.redhat.com/support/errata/RHSA-2001-018.html
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-024.php3
http://www.debian.org/security/2001/dsa-031
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000381
http://archives.neohapsis.com/archives/bugtraq/2001-02/0437.html
http://archives.neohapsis.com/archives/bugtraq/2001-02/0427.html
http://archives.neohapsis.com/archives/bugtraq/2001-02/0414.html