Linux Security
    Linux Security
    Linux Security

    Debian: 'samba' symlink attack

    Date 17 Apr 2001
    3552
    Posted By LinuxSecurity Advisories
    samba sometimes does not create temporary files safely which may result in a symlink attack.
    
    ------------------------------------------------------------------------
    Debian Security Advisory DSA-048-1                   This email address is being protected from spambots. You need JavaScript enabled to view it. 
    https://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:
         https://security.debian.org/dists/stable/updates/main/source/samba_2.0.7-3.2.diff.gz
          MD5 checksum: 82f8739acbd18c2ea8756ca705d17fef
         https://security.debian.org/dists/stable/updates/main/source/samba_2.0.7-3.2.dsc
          MD5 checksum: 9db59a582e19daf987c8a0ed967ca191
         https://security.debian.org/dists/stable/updates/main/source/samba_2.0.7.orig.tar.gz
          MD5 checksum: b5e61ea655d476072fd0365785fea2d0
    
      Architecture indendent archives:
         https://security.debian.org/dists/stable/updates/main/binary-all/samba-doc_2.0.7-3.2_all.deb
          MD5 checksum: 5e141a7224ce79f11e9b2064437798ca
    
      Alpha architecture:
         https://security.debian.org/dists/stable/updates/main/binary-alpha/samba-common_2.0.7-3.2_alpha.deb
          MD5 checksum: 6a2f7e7a57ab35886c8bfdfe3798d5ea
         https://security.debian.org/dists/stable/updates/main/binary-alpha/samba_2.0.7-3.2_alpha.deb
          MD5 checksum: 742bdfcd38f1601e9da31c45b0998222
         https://security.debian.org/dists/stable/updates/main/binary-alpha/smbclient_2.0.7-3.2_alpha.deb
          MD5 checksum: eee19cafe89c836727320d08056584e2
         https://security.debian.org/dists/stable/updates/main/binary-alpha/smbfs_2.0.7-3.2_alpha.deb
          MD5 checksum: edbe76558ce16b42267f9e0836787d49
         https://security.debian.org/dists/stable/updates/main/binary-alpha/swat_2.0.7-3.2_alpha.deb
          MD5 checksum: 7953a130bc363c1c7b62e87a1e0e7121
    
      ARM architecture:
         https://security.debian.org/dists/stable/updates/main/binary-arm/samba-common_2.0.7-3.2_arm.deb
          MD5 checksum: 6217609b05ceb4a39bcd02abc3524a5d
         https://security.debian.org/dists/stable/updates/main/binary-arm/samba_2.0.7-3.2_arm.deb
          MD5 checksum: ca294748daf3e2e154801599c51ffd35
         https://security.debian.org/dists/stable/updates/main/binary-arm/smbclient_2.0.7-3.2_arm.deb
          MD5 checksum: cf095c92a9628ffbe2211b6a1c87d184
         https://security.debian.org/dists/stable/updates/main/binary-arm/smbfs_2.0.7-3.2_arm.deb
          MD5 checksum: 3403c99981c349ea0bf36f557f1e8067
         https://security.debian.org/dists/stable/updates/main/binary-arm/swat_2.0.7-3.2_arm.deb
          MD5 checksum: a03ee71fefd16b53a04a5a9046d5f419
    
      Intel ia32 architecture:
         https://security.debian.org/dists/stable/updates/main/binary-i386/samba-common_2.0.7-3.2_i386.deb
          MD5 checksum: 28d1ca225b39dbba8e427c4a3ff4db5e
         https://security.debian.org/dists/stable/updates/main/binary-i386/samba_2.0.7-3.2_i386.deb
          MD5 checksum: 624e9fc767b45fcaee386e83def462b0
         https://security.debian.org/dists/stable/updates/main/binary-i386/smbclient_2.0.7-3.2_i386.deb
          MD5 checksum: ad4b5f2da854a7d4a7224cb8f87eb4bc
         https://security.debian.org/dists/stable/updates/main/binary-i386/smbfs_2.0.7-3.2_i386.deb
          MD5 checksum: 7d344d86f479417398a47c467b15202f
         https://security.debian.org/dists/stable/updates/main/binary-i386/swat_2.0.7-3.2_i386.deb
          MD5 checksum: c488d0e582b63a47743943c53a8b94ec
    
      Motorola 680x0 architecture:
         https://security.debian.org/dists/stable/updates/main/binary-m68k/samba-common_2.0.7-3.2_m68k.deb
          MD5 checksum: bb80db7568a979598bb97ebe72734111
         https://security.debian.org/dists/stable/updates/main/binary-m68k/samba_2.0.7-3.2_m68k.deb
          MD5 checksum: ea048e0bebea6005ea137fae614ceb1e
         https://security.debian.org/dists/stable/updates/main/binary-m68k/smbclient_2.0.7-3.2_m68k.deb
          MD5 checksum: 41e467e2f5fa8c37ad590e791c4bb986
         https://security.debian.org/dists/stable/updates/main/binary-m68k/smbfs_2.0.7-3.2_m68k.deb
          MD5 checksum: 1a64849dde006f826008be44ee2a1fc6
         https://security.debian.org/dists/stable/updates/main/binary-m68k/swat_2.0.7-3.2_m68k.deb
          MD5 checksum: 0fad867c08bd94114d5e6d5b9cfc55df
    
      PowerPC architecture:
         https://security.debian.org/dists/stable/updates/main/binary-powerpc/samba-common_2.0.7-3.2_powerpc.deb
          MD5 checksum: 1b14775f54e370e2c7fcd7adfa0a083f
         https://security.debian.org/dists/stable/updates/main/binary-powerpc/samba_2.0.7-3.2_powerpc.deb
          MD5 checksum: 4d8d1721a0d62179b3a15c9198e96974
         https://security.debian.org/dists/stable/updates/main/binary-powerpc/smbclient_2.0.7-3.2_powerpc.deb
          MD5 checksum: 3dd961b0b1e0665a3b963530d45ce61c
         https://security.debian.org/dists/stable/updates/main/binary-powerpc/smbfs_2.0.7-3.2_powerpc.deb
          MD5 checksum: 89cb67b2550f324435a7946ae9441eea
         https://security.debian.org/dists/stable/updates/main/binary-powerpc/swat_2.0.7-3.2_powerpc.deb
          MD5 checksum: f9bcaa966f37c1f4c244e4d2dfdda9b8
    
      Sun Sparc architecture:
         https://security.debian.org/dists/stable/updates/main/binary-sparc/samba-common_2.0.7-3.2_sparc.deb
          MD5 checksum: 22623e59f94d4b9389f415bf551902ad
         https://security.debian.org/dists/stable/updates/main/binary-sparc/samba_2.0.7-3.2_sparc.deb
          MD5 checksum: 0a61c286bcff8265ffac42f9e16c2cfb
         https://security.debian.org/dists/stable/updates/main/binary-sparc/smbclient_2.0.7-3.2_sparc.deb
          MD5 checksum: a69169f02ef3fdede523f406c36cd12a
         https://security.debian.org/dists/stable/updates/main/binary-sparc/smbfs_2.0.7-3.2_sparc.deb
          MD5 checksum: 2aa6c4b0a0228e38427c09dec251b487
         https://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  https://security.debian.org/ stable/updates main
    dpkg-ftp:  ftp://security.debian.org/debian-security dists/stable/updates/main
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