Debian: 'cfingerd' vulnerability

    Date19 Apr 2001
    CategoryDebian
    2545
    Posted ByLinuxSecurity Advisories
    Megyer Laszlo report on Bugtraq that the cfingerd Debian as distributed with Debian GNU/Linux 2.2 was not careful in its logging code.
    
    ------------------------------------------------------------------------
    Debian Security Advisory DSA-048-1                   This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                         Wichert Akkerman
    April 19, 2001
    ------------------------------------------------------------------------
    
    
    Package        : cfingerd
    Problem type   : remote printf format attack
    Debian-specific: no
    
    Megyer Laszlo report on Bugtraq that the cfingerd Debian as distributed
    with Debian GNU/Linux 2.2 was not careful in its logging code. By
    combining this with an off-by-one error in the code that copied the
    username from an ident response cfingerd could exploited by a remote
    user. Since cfingerd does not drop its root privileges until after
    it has determined which user to finger an attacker can gain
    root privileges.
    
    This has been fixed in version 1.4.1-1.1, and we recommend that you
    upgrade your cfingerd 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/cfingerd_1.4.1-1.1.diff.gz
          MD5 checksum: 9ea177fd9f986c75da499c52c15d9dbe
         http://security.debian.org/dists/stable/updates/main/source/cfingerd_1.4.1-1.1.dsc
          MD5 checksum: c9b3a1bc6bd2cb2dad3916da82df917c
         http://security.debian.org/dists/stable/updates/main/source/cfingerd_1.4.1.orig.tar.gz
          MD5 checksum: 0461179bca7bb9b00fb23c0886666cb0
    
      Alpha architecture:
         http://security.debian.org/dists/stable/updates/main/binary-alpha/cfingerd_1.4.1-1.1_alpha.deb
          MD5 checksum: 55eebf918692fb12bbcefb512ae9cfad
    
      ARM architecture:
         http://security.debian.org/dists/stable/updates/main/binary-arm/cfingerd_1.4.1-1.1_arm.deb
          MD5 checksum: 41089c6e44cd1a91beb769070720c597
    
      Intel ia32 architecture:
         http://security.debian.org/dists/stable/updates/main/binary-i386/cfingerd_1.4.1-1.1_i386.deb
          MD5 checksum: 6ef1f240c9ab6fa1e94143d020bd782e
    
      Motorola 680x0 architecture:
         http://security.debian.org/dists/stable/updates/main/binary-m68k/cfingerd_1.4.1-1.1_m68k.deb
          MD5 checksum: 670ed451481a4ade769c3128a95d20f2
    
      PowerPC architecture:
         http://security.debian.org/dists/stable/updates/main/binary-powerpc/cfingerd_1.4.1-1.1_powerpc.deb
          MD5 checksum: 9ca4d42c82f49974de09711f9d146c14
    
      Sun Sparc architecture:
         http://security.debian.org/dists/stable/updates/main/binary-sparc/cfingerd_1.4.1-1.1_sparc.deb
          MD5 checksum: 898af9044c308cc217cc9d3b0050c34e
    
      These packages will be moved into the stable distribution on its next
      revision.
    
    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
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