Debians sikkerhedsbulletin

DSA-090-1 xtel -- symlink-angreb

Rapporteret den:
5. dec 2001
Berørte pakker:
xtel
Sårbar:
Ja
Referencer i sikkerhedsdatabaser:
I Bugtraq-databasen (hos SecurityFocus): BugTraq-id 3626.
I Mitres CVE-ordbog: CVE-2002-0334.
Yderligere oplysninger:

Pakken xtel (en X-emulator til minitel) der distributeres med Debian GNU/Linux 2.2 har to mulige symlink-angreb:

  • xteld oprettede en midlertidig fil /tmp/.xtel-<user> uden at undersøge om der var symlinks.
  • ved udskrift oprettede xtel en midlertidig fil uden at beskytte sig selv mod symlink-angreb.

Begge problemer er blevet rettet i version 3.2.1-4.potato.1.

Rettet i:

Debian GNU/Linux 2.2 (potato)

Kildekode:
http://security.debian.org/dists/stable/updates/main/source/xtel_3.2.1-4.potato.1.diff.gz
http://security.debian.org/dists/stable/updates/main/source/xtel_3.2.1-4.potato.1.dsc
http://security.debian.org/dists/stable/updates/main/source/xtel_3.2.1.orig.tar.gz
Alpha:
http://security.debian.org/dists/stable/updates/main/binary-alpha/xtel_3.2.1-4.potato.1_alpha.deb
ARM:
http://security.debian.org/dists/stable/updates/main/binary-arm/xtel_3.2.1-4.potato.1_arm.deb
Motorola 680x0:
http://security.debian.org/dists/stable/updates/main/binary-m68k/xtel_3.2.1-4.potato.1_m68k.deb
Intel IA-32:
http://security.debian.org/dists/stable/updates/main/binary-i386/xtel_3.2.1-4.potato.1_i386.deb
PowerPC:
http://security.debian.org/dists/stable/updates/main/binary-powerpc/xtel_3.2.1-4.potato.1_powerpc.deb
Sun Sparc:
http://security.debian.org/dists/stable/updates/main/binary-sparc/xtel_3.2.1-4.potato.1_sparc.deb

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