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Debian Security Advisory: samba symlink attacks

Apr 18, 2001, 01:34 (2 Talkback[s])
Date: Wed, 18 Apr 2001 02:14:32 +0200
From: Wichert Akkerman <wichert@cistron.nl>
Subject: [SECURITY] [DSA-048-1] samba symlink attacks



Debian Security Advisory DSA-048-1                   security@debian.org
http://www.debian.org/security/                         Wichert Akkerman


April 18, 2001

Package : samba
Problem type : symlink attack
Debian-specific: no

Marcus Meissner discovered that samba was not creating temporary files safely in two places:

  • when a remote user queried a printer queue samba would creates a temporary file in which the queue data would be written. This was doing using a predictable filename and insecurely, allowing a local attacker to trick samba into overwriting arbitrary files.
  • smbclient "more" and "mput" commands also creates temporary files in /tmp insecurely.

Both problems have been fixed in version 2.0.7-3.2. and we recommand that you upgrade your samba package immediately.

wget url

will fetch the file for you
dpkg -i file.deb

will install the referenced file.

Debian GNU/Linux 2.2 alias potato


Potato was released for alpha, arm, i386, m68k, powerpc and sparc.

  Source archives:
http://security.debian.org/dists/stable/updates/main/source/samba_2.0.7-3.2.diff.gz MD5 checksum: 82f8739acbd18c2ea8756ca705d17fef http://security.debian.org/dists/stable/updates/main/source/samba_2.0.7-3.2.dsc MD5 checksum: 9db59a582e19daf987c8a0ed967ca191 http://security.debian.org/dists/stable/updates/main/source/samba_2.0.7.orig.tar.gz MD5 checksum: b5e61ea655d476072fd0365785fea2d0 Architecture indendent archives:
http://security.debian.org/dists/stable/updates/main/binary-all/samba-doc_2.0.7-3.2_all.deb MD5 checksum: 5e141a7224ce79f11e9b2064437798ca Alpha architecture:
http://security.debian.org/dists/stable/updates/main/binary-alpha/samba-common_2.0.7-3.2_alpha.deb MD5 checksum: 6a2f7e7a57ab35886c8bfdfe3798d5ea http://security.debian.org/dists/stable/updates/main/binary-alpha/samba_2.0.7-3.2_alpha.deb MD5 checksum: 742bdfcd38f1601e9da31c45b0998222 http://security.debian.org/dists/stable/updates/main/binary-alpha/smbclient_2.0.7-3.2_alpha.deb MD5 checksum: eee19cafe89c836727320d08056584e2 http://security.debian.org/dists/stable/updates/main/binary-alpha/smbfs_2.0.7-3.2_alpha.deb MD5 checksum: edbe76558ce16b42267f9e0836787d49 http://security.debian.org/dists/stable/updates/main/binary-alpha/swat_2.0.7-3.2_alpha.deb MD5 checksum: 7953a130bc363c1c7b62e87a1e0e7121 ARM architecture:
http://security.debian.org/dists/stable/updates/main/binary-arm/samba-common_2.0.7-3.2_arm.deb MD5 checksum: 6217609b05ceb4a39bcd02abc3524a5d http://security.debian.org/dists/stable/updates/main/binary-arm/samba_2.0.7-3.2_arm.deb MD5 checksum: ca294748daf3e2e154801599c51ffd35 http://security.debian.org/dists/stable/updates/main/binary-arm/smbclient_2.0.7-3.2_arm.deb MD5 checksum: cf095c92a9628ffbe2211b6a1c87d184 http://security.debian.org/dists/stable/updates/main/binary-arm/smbfs_2.0.7-3.2_arm.deb MD5 checksum: 3403c99981c349ea0bf36f557f1e8067 http://security.debian.org/dists/stable/updates/main/binary-arm/swat_2.0.7-3.2_arm.deb MD5 checksum: a03ee71fefd16b53a04a5a9046d5f419 Intel ia32 architecture:
http://security.debian.org/dists/stable/updates/main/binary-i386/samba-common_2.0.7-3.2_i386.deb MD5 checksum: 28d1ca225b39dbba8e427c4a3ff4db5e http://security.debian.org/dists/stable/updates/main/binary-i386/samba_2.0.7-3.2_i386.deb MD5 checksum: 624e9fc767b45fcaee386e83def462b0 http://security.debian.org/dists/stable/updates/main/binary-i386/smbclient_2.0.7-3.2_i386.deb MD5 checksum: ad4b5f2da854a7d4a7224cb8f87eb4bc http://security.debian.org/dists/stable/updates/main/binary-i386/smbfs_2.0.7-3.2_i386.deb MD5 checksum: 7d344d86f479417398a47c467b15202f http://security.debian.org/dists/stable/updates/main/binary-i386/swat_2.0.7-3.2_i386.deb MD5 checksum: c488d0e582b63a47743943c53a8b94ec Motorola 680x0 architecture:
http://security.debian.org/dists/stable/updates/main/binary-m68k/samba-common_2.0.7-3.2_m68k.deb MD5 checksum: bb80db7568a979598bb97ebe72734111 http://security.debian.org/dists/stable/updates/main/binary-m68k/samba_2.0.7-3.2_m68k.deb MD5 checksum: ea048e0bebea6005ea137fae614ceb1e http://security.debian.org/dists/stable/updates/main/binary-m68k/smbclient_2.0.7-3.2_m68k.deb MD5 checksum: 41e467e2f5fa8c37ad590e791c4bb986 http://security.debian.org/dists/stable/updates/main/binary-m68k/smbfs_2.0.7-3.2_m68k.deb MD5 checksum: 1a64849dde006f826008be44ee2a1fc6 http://security.debian.org/dists/stable/updates/main/binary-m68k/swat_2.0.7-3.2_m68k.deb MD5 checksum: 0fad867c08bd94114d5e6d5b9cfc55df PowerPC architecture:
http://security.debian.org/dists/stable/updates/main/binary-powerpc/samba-common_2.0.7-3.2_powerpc.deb MD5 checksum: 1b14775f54e370e2c7fcd7adfa0a083f http://security.debian.org/dists/stable/updates/main/binary-powerpc/samba_2.0.7-3.2_powerpc.deb MD5 checksum: 4d8d1721a0d62179b3a15c9198e96974 http://security.debian.org/dists/stable/updates/main/binary-powerpc/smbclient_2.0.7-3.2_powerpc.deb MD5 checksum: 3dd961b0b1e0665a3b963530d45ce61c http://security.debian.org/dists/stable/updates/main/binary-powerpc/smbfs_2.0.7-3.2_powerpc.deb MD5 checksum: 89cb67b2550f324435a7946ae9441eea http://security.debian.org/dists/stable/updates/main/binary-powerpc/swat_2.0.7-3.2_powerpc.deb MD5 checksum: f9bcaa966f37c1f4c244e4d2dfdda9b8 Sun Sparc architecture:
http://security.debian.org/dists/stable/updates/main/binary-sparc/samba-common_2.0.7-3.2_sparc.deb MD5 checksum: 22623e59f94d4b9389f415bf551902ad http://security.debian.org/dists/stable/updates/main/binary-sparc/samba_2.0.7-3.2_sparc.deb MD5 checksum: 0a61c286bcff8265ffac42f9e16c2cfb http://security.debian.org/dists/stable/updates/main/binary-sparc/smbclient_2.0.7-3.2_sparc.deb MD5 checksum: a69169f02ef3fdede523f406c36cd12a http://security.debian.org/dists/stable/updates/main/binary-sparc/smbfs_2.0.7-3.2_sparc.deb MD5 checksum: 2aa6c4b0a0228e38427c09dec251b487 http://security.debian.org/dists/stable/updates/main/binary-sparc/swat_2.0.7-3.2_sparc.deb MD5 checksum: 7f6971d7cc236fde6307a666852b5e1c
These files will be moved into ftp://ftp.debian.org/debian/dists/stable/*/binary-$arch/ soon.

For not yet released architectures please refer to the appropriate directory ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .


apt-get: deb http://security.debian.org/ stable/updates main

dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main

Mailing list: debian-security-announce@lists.debian.org