Debian: 'exmh' temp file vulnerability

    Date26 Jan 2001
    CategoryDebian
    2707
    Posted ByLinuxSecurity Advisories
    exmh creates temporary files in an insecure fasion, thus making it vulnerable to a symlink attack.
    
    - ----------------------------------------------------------------------------
    Debian Security Advisory DSA-022-1                       This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                               Martin Schulze
    January 26, 2001
    - ----------------------------------------------------------------------------
    
    Package        : exmh
    Vulnerability  : local insecure tempfile creation
    Debian-specific: no
    
    Former versions of the exmh program used /tmp for storing temporary
    files.  No checks were made to ensure that nobody placed a symlink
    with the same name in /tmp in the meantime and thus was vulnerable to
    a symlink attack.  This could lead to a malicious local user being
    able to overwrite any file writable by the user executing exmh.
    Upstream developers have reported and fixed this.  The exmh program
    now use /tmp/login now unless TMPDIR or EXMHTMPDIR is set.
    
    We recommend you upgrade your exmh packages immediately.
    
    wget url
            will fetch the file for you
    dpkg -i file.deb
            will install the referenced file.
    
    You may use an automated update by adding the resources from the
    footer to the proper configuration.
    
    
    Debian GNU/Linux 2.2 alias potato
    - ------------------------------------
    
      Potato was released for the alpha, arm, i386, m68k, powerpc and
      sparc architectures.  This package does not contain any architecture
      dependent data (i.e. no compiled programs).
    
    
      Source archives:
    
         http://security.debian.org/dists/stable/updates/main/source/exmh_2.1.1-1.1.diff.gz
          MD5 checksum: 67cd5c52498b1dc120b608b151cbd44c
         http://security.debian.org/dists/stable/updates/main/source/exmh_2.1.1-1.1.dsc
          MD5 checksum: 36f91fba778ff68881adb4022ae99403
         http://security.debian.org/dists/stable/updates/main/source/exmh_2.1.1.orig.tar.gz
          MD5 checksum: f3c6eedfa5720e236389e22234a57c24
    
      Architecture independent:
    
         http://security.debian.org/dists/stable/updates/main/binary-all/exmh_2.1.1-1.1_all.deb
          MD5 checksum: 326c6374703977be603579435d328cf8
    
    
      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/ .
    
    - ----------------------------------------------------------------------------
    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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