An integer overflow in ls in the fileutils or coreutils packages may allow local users to cause a denial of service or execute arbitrary code via a large -w value, which could be remotely exploited via applications that use ls, such as wu-ftpd.
http://www.turbolinux.com/security/TLSA-2003-60.txt
http://www.securityfocus.com/advisories/6014
http://www.redhat.com/support/errata/RHSA-2003-310.html
http://www.redhat.com/support/errata/RHSA-2003-309.html
http://www.mandriva.com/security/advisories?name=MDKSA-2003:106
http://www.guninski.com/binls.html
http://support.avaya.com/elmodocs2/security/ASA-2005-213.pdf
http://secunia.com/advisories/17069
http://secunia.com/advisories/10126
http://lists.grok.org.uk/pipermail/full-disclosure/2003-October/012548.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000771
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000768