Debian: 'procmail' unsafe signal handling

    Date18 Oct 2001
    CategoryDebian
    3350
    Posted ByLinuxSecurity Advisories
    Using older versions of procmail it was possible to make procmail crash by sending it signals. On systems where procmail is installed setuid this could be exploited to obtain unauthorized privileges.
    
    --------------------------------------------------------------------------
    Debian Security Advisory DSA 083-1                     This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                             Martin Schulze
    October 18th, 2001
    --------------------------------------------------------------------------
    
    Package        : procmail
    Vulnerability  : insecure signal handling
    Problem-Type   : local root exploit
    Debian-specific: no
    
    Using older versions of procmail it was possible to make procmail
    crash by sending it signals.  On systems where procmail is installed
    setuid this could be exploited to obtain unauthorized privileges.
    
    This problem has been fixed in version 3.20 by the upstream
    maintainer, included in Debian unstable, and was ported back to
    version 3.15.2 which is available for for the stable Debian GNU/Linux
    2.2.
    
    We recommend that you upgrade your procmail package immediately.
    
    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 2.2 alias potato
    ------------------------------------
    
      Source archives:
    
         http://security.debian.org/dists/stable/updates/main/source/procmail_3.15.2-1.diff.gz
          MD5 checksum: 0cb94b0c0d122a01f40f121ea0ec6ade
         http://security.debian.org/dists/stable/updates/main/source/procmail_3.15.2-1.dsc
          MD5 checksum: 0c197e2629dc5aca44f08a97b94751ad
         http://security.debian.org/dists/stable/updates/main/source/procmail_3.15.2.orig.tar.gz
          MD5 checksum: 933c8f378082048f2d7f598dff9b760c
    
      Alpha architecture:
    
         http://security.debian.org/dists/stable/updates/main/binary-alpha/procmail_3.15.2-1_alpha.deb
          MD5 checksum: daf60f1b098153e852f2e8404acbf037
    
      ARM architecture:
    
         http://security.debian.org/dists/stable/updates/main/binary-arm/procmail_3.15.2-1_arm.deb
          MD5 checksum: 2e1b96787ccb90724db0b0dc97574a9a
    
      Intel ia32 architecture:
    
         http://security.debian.org/dists/stable/updates/main/binary-i386/procmail_3.15.2-1_i386.deb
          MD5 checksum: d7245b21110faf119e77705eaf724218
    
      Motorola 680x0 architecture:
    
         http://security.debian.org/dists/stable/updates/main/binary-m68k/procmail_3.15.2-1_m68k.deb
          MD5 checksum: f9bf3d4630d57abc6ff876d01174493f
    
      PowerPC architecture:
    
         http://security.debian.org/dists/stable/updates/main/binary-powerpc/procmail_3.15.2-1_powerpc.deb
          MD5 checksum: e2713f8a2862ddab38774a1708b85018
    
      Sun Sparc architecture:
    
         http://security.debian.org/dists/stable/updates/main/binary-sparc/procmail_3.15.2-1_sparc.deb
          MD5 checksum: 80635f04bd2bbfc991176438307d7371
    
    
      These files will be moved into the stable distribution on its next
      revision.
    
    ---------------------------------------------------------------------------------
    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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    Package info: `apt-cache show ' and  http://packages.debian.org/
    
    
    
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