Debians sikkerhedsbulletin

DSA-062-1 rxvt -- buffer-overløb

Rapporteret den:

16. jun 2001

Berørte pakker:

rxvt

Sårbar:

Referencer i sikkerhedsdatabaser:

I Bugtraq-databasen (hos SecurityFocus): BugTraq-id 2878.
I Mitres CVE-ordbog: CVE-2001-1077.

Yderligere oplysninger:

Samuel Dralet rapporterede på bugtraq at version 2.6.2 af rxvt (en VT102-terminalemulator til X) har et buffer-overløb i tt_printf()-funktionen. En lokal bruger kunne misbruge dette ved at få rxvt til at skrive en speciel streng ved hjælp af denne funktion, for eksempel ved at anvende kommandolinieparameteret -T eller -name. Denne streng ville forsage et stack-overløb og indeholde kode som rxvt ville udføre.

Da rxvt er installeret sgid utmp kunne en angriber bruge dette til at få adgang utmp-rettighed, hvilket ville give ham lov til at ændre utmp-filen.

Dette er rettet i version 2.6.2-2.1 og vi anbefaler at du opgraderer din rxvt-pakke.

Rettet i:

Debian GNU/Linux 2.2 (potato)

Kildekode:: http://security.debian.org/dists/stable/updates/main/source/rxvt_2.6.2-2.1.diff.gz; http://security.debian.org/dists/stable/updates/main/source/rxvt_2.6.2-2.1.dsc; http://security.debian.org/dists/stable/updates/main/source/rxvt_2.6.2.orig.tar.gz
Alpha:: http://security.debian.org/dists/stable/updates/main/binary-alpha/rxvt-ml_2.6.2-2.1_alpha.deb; http://security.debian.org/dists/stable/updates/main/binary-alpha/rxvt_2.6.2-2.1_alpha.deb
ARM:: http://security.debian.org/dists/stable/updates/main/binary-arm/rxvt-ml_2.6.2-2.1_arm.deb; http://security.debian.org/dists/stable/updates/main/binary-arm/rxvt_2.6.2-2.1_arm.deb
Intel IA-32:: http://security.debian.org/dists/stable/updates/main/binary-i386/rxvt-ml_2.6.2-2.1_i386.deb; http://security.debian.org/dists/stable/updates/main/binary-i386/rxvt_2.6.2-2.1_i386.deb
Motorola 680x0:: http://security.debian.org/dists/stable/updates/main/binary-m68k/rxvt-ml_2.6.2-2.1_m68k.deb; http://security.debian.org/dists/stable/updates/main/binary-m68k/rxvt_2.6.2-2.1_m68k.deb
PowerPC:: http://security.debian.org/dists/stable/updates/main/binary-powerpc/rxvt-ml_2.6.2-2.1_powerpc.deb; http://security.debian.org/dists/stable/updates/main/binary-powerpc/rxvt_2.6.2-2.1_powerpc.deb
Sun Sparc:: http://security.debian.org/dists/stable/updates/main/binary-sparc/rxvt-ml_2.6.2-2.1_sparc.deb; http://security.debian.org/dists/stable/updates/main/binary-sparc/rxvt_2.6.2-2.1_sparc.deb

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