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[Debian] Schwachstelle in Linux-ftpd - DSA 1217-1
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Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgende Warnung des Debian-Teams. Wir geben
diese Informationen unveraendert an Sie weiter.
CVE-2006-5778 - Schwachstelle in Linux-ftpd
Da Linux-ftpd UID und GID beim Verbinden mit dem Server zu spaet
aendert, koennen Zugriffseinschraenkungen umgangen werden, wenn
versucht wird auf per NFS eingebundene Laufwerke zuzugreifen. Da NFS
Server im Allgemeinen keinen Zugriff mit Rootrechten erlauben, wird
der Benutzer in ein anderes Verzeichnis umgeleitet, auf welches er
moeglicherweise sonst keinen Zugriff haette.
Betroffen sind die folgenden Software Pakete und Plattformen:
Paket linux-ftpd in der stable Distribution (sarge) vor Version
0.17-20sarge2
Paket linux-ftpd in der kommenden stable Distribution (etch) vor
Version 0.17-22
Paket linux-ftpd in der unstable Distribution (sid) vor Version 0.17-22
Stable Distribution (sarge)
Die kommende stable Distribution (etch)
Testing Distribution (sid)
Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.
Hersteller Advisory:
http://www.debian.org/security/2006/dsa-1217
(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.
Mit freundlichen Gruessen,
Andreas Bunten, DFN-CERT
- --
Andreas Bunten (CSIRT), DFN-CERT Services GmbH
https://www.dfn-cert.de/, +49 40 808077-617
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Debian Security Advisory DSA 1217-1 security@xxxxxxxxxx
http://www.debian.org/security/ Moritz Muehlenhoff
November 20th, 2006 http://www.debian.org/security/faq
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Package : linux-ftpd
Vulnerability : programming error
Problem-Type : remote
Debian-specific: no
CVE ID : CVE-2006-5778
Debian Bug : 384454
Paul Szabo discovered that the netkit ftp server switches the user id too
late, which may lead to the bypass of access restrictions when running
on NFS. This update also adds return value checks to setuid() calls, which
may fail in some PAM configurations.
For the stable distribution (sarge) this problem has been fixed in
version 0.17-20sarge2.
For the upcoming stable distribution (etch) this problem has been
fixed in version 0.17-22.
For the unstable distribution (sid) this problem has been fixed in
version 0.17-22.
We recommend that you upgrade your ftpd package.
Upgrade Instructions
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wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.
If you are using the apt-get package manager, use the line for
sources.list as given below:
apt-get update
will update the internal database
apt-get upgrade
will install corrected packages
You may use an automated update by adding the resources from the
footer to the proper configuration.
Debian GNU/Linux 3.1 alias sarge
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Source archives:
http://security.debian.org/pool/updates/main/l/linux-ftpd/linux-ftpd_0.17-20sarge2.dsc
Size/MD5 checksum: 610 371222af9e3f445d8b1a0622f3a70382
http://security.debian.org/pool/updates/main/l/linux-ftpd/linux-ftpd_0.17-20sarge2.diff.gz
Size/MD5 checksum: 16034 3848d3d15b78aa4dd17b0e09c64b15a8
http://security.debian.org/pool/updates/main/l/linux-ftpd/linux-ftpd_0.17.orig.tar.gz
Size/MD5 checksum: 46763 f5f491564812db5d8783daa538c49186
Alpha architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_alpha.deb
Size/MD5 checksum: 49118 caeecd835e084796f921fd1941fc8912
AMD64 architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_amd64.deb
Size/MD5 checksum: 44858 bb6746d34dac3b9304dae0551c6355f4
ARM architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_arm.deb
Size/MD5 checksum: 44090 baa6dc258bbba352aad5d59bbc03f87b
HP Precision architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_hppa.deb
Size/MD5 checksum: 47430 d856102807f47f8dac3a0b383c1149b4
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_i386.deb
Size/MD5 checksum: 43310 10ce0c8367e83b1ce1419b244753dcc0
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_ia64.deb
Size/MD5 checksum: 57366 2121d4017c33f4968230011b27d56bfc
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_m68k.deb
Size/MD5 checksum: 40914 81af10a14af21fa4a73a97d4b7581cba
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_mips.deb
Size/MD5 checksum: 46802 ef336e8a944121be9974ae72d6ee5ae8
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_mipsel.deb
Size/MD5 checksum: 46746 05aa9e2e9c127110d09f345e2a6367d1
PowerPC architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_powerpc.deb
Size/MD5 checksum: 46712 6932bbad8b6852a3776b40196d28dee1
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_s390.deb
Size/MD5 checksum: 45992 a0b2bad9c6b04889be2c7b87840769c6
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_sparc.deb
Size/MD5 checksum: 43366 a92a7561358f005be3ff58c73a4c4b7b
These files will probably be moved into the stable distribution on
its next update.
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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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