Debians sikkerhedsbulletin

DSA-569-1 netkit-telnet-ssl -- ugyldig free(3)

Rapporteret den:

18. okt 2004

Berørte pakker:

netkit-telnet-ssl

Sårbar:

Referencer i sikkerhedsdatabaser:

I Debians fejlsporingssystem: Fejl 273694.
I Mitres CVE-ordbog: CVE-2004-0911.

Yderligere oplysninger:

Michal Zalewski har opdaget en fejl i serveren netkit-telnet (telnetd), hvorved en fjernangriber kunne forårsage af telnetd-processen frigav en ugyldig pointer. Dette medførte at telnet-server-processen gik ned, hvilket førte til at typisk lammelsesangreb (inetd slår tjenesten fra hvis telnetd går ned flere gange) eller muligvis udførelse af vilkårlig kode med rettighederne hørende til telnetd-processen (som standard brugeren "telnetd").

I den stabile distribution (woody) er dette problem rettet i version 0.17.17+0.1-2woody2.

I den ustabile distribution (sid) er dette problem rettet i version 0.17.24+0.1-4.

Vi anbefaler at du opgraderer din netkit-telnet-ssl-pakke.

Rettet i:

Debian GNU/Linux 3.0 (woody)

Kildekode:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1-2woody2.dsc; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1-2woody2.diff.gz; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1.orig.tar.gz
Alpha:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_alpha.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_alpha.deb
ARM:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_arm.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_arm.deb
Intel IA-32:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_i386.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_i386.deb
Intel IA-64:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_ia64.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_ia64.deb
HPPA:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_hppa.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_hppa.deb
Motorola 680x0:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_m68k.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_m68k.deb
Big endian MIPS:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_mips.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_mips.deb
Little endian MIPS:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_mipsel.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_mipsel.deb
PowerPC:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_powerpc.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_powerpc.deb
IBM S/390:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_s390.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_s390.deb
Sun Sparc:: http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody2_sparc.deb; http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody2_sparc.deb

MD5-kontrolsummer for de listede filer findes i den originale sikkerhedsbulletin.