Debian: 'osh' buffer overflows

    Date20 Jun 2003
    CategoryDebian
    2522
    Posted ByLinuxSecurity Advisories
    Steve Kemp discovered that osh, a shell intended to restrict the actions of the user, contains two buffer overflows, in processing environment variables and file redirections. These vulnerabilities could be used to execute arbitrary code, overriding any restrictions placed on the shell.
    
    --------------------------------------------------------------------------
    Debian Security Advisory DSA 329-1                     This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                             Matt Zimmerman
    June 20th, 2003                          http://www.debian.org/security/faq
    --------------------------------------------------------------------------
    
    Package        : osh
    Vulnerability  : buffer overflows
    Problem-Type   : local
    Debian-specific: no
    
    Steve Kemp discovered that osh, a shell intended to restrict the
    actions of the user, contains two buffer overflows, in processing
    environment variables and file redirections.  These vulnerabilities
    could be used to execute arbitrary code, overriding any restrictions
    placed on the shell.
    
    For the stable distribution (woody) this problem has been fixed in
    version 1.7-11woody1.
    
    The old stable distribution (potato) is affected by this problem, and
    may be fixed in a future advisory on a time-available basis.
    
    For the unstable distribution (sid) this problem is fixed in version
    1.7-12.
    
    We recommend that you update your osh package.
    
    Upgrade Instructions
    --------------------
    
    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 3.0 alias woody
    --------------------------------
    
      Source archives:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1.dsc
          Size/MD5 checksum:      565 3af7f1c0c6a346d204c379b1a0c76239
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1.diff.gz
          Size/MD5 checksum:    11456 50c1a6f3a14d5a9a87a0903d01e40f82
    
      Alpha architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_alpha.deb
          Size/MD5 checksum:    33018 b655c662609b7bb5062a20b657a17a4c
    
      ARM architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_arm.deb
          Size/MD5 checksum:    27164 1f47067f854ca6997eaf5c1dde43f80d
    
      Intel IA-32 architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_i386.deb
          Size/MD5 checksum:    26734 dc76617c5ba84467187da2ef53b6b5b9
    
      Intel IA-64 architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_ia64.deb
          Size/MD5 checksum:    36458 6611963c875df296cc82331a0d4ac5af
    
      HP Precision architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_hppa.deb
          Size/MD5 checksum:    29144 5a16455ee0e50519b006010748d8e3b8
    
      Motorola 680x0 architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_m68k.deb
          Size/MD5 checksum:    26014 8d8cfaa42fa540c7dc3e74e80a96e4a6
    
      Big endian MIPS architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_mips.deb
          Size/MD5 checksum:    29296 e1d1fbeea475a3b7cb788e0dcb03ba08
    
      Little endian MIPS architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_mipsel.deb
          Size/MD5 checksum:    29218 1c647b0936720769bd3be3649849db7f
    
      PowerPC architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_powerpc.deb
          Size/MD5 checksum:    28534 7b6ef4f5ac2c7d3dd919262d04b24f7d
    
      IBM S/390 architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_s390.deb
          Size/MD5 checksum:    27944 b14299fa7552124c3e6b05001e79e646
    
      Sun Sparc architecture:
    
         http://security.debian.org/pool/updates/main/o/osh/osh_1.7-11woody1_sparc.deb
          Size/MD5 checksum:    30626 58a7ccea2b17bbdbd124565545dd1057
    
      These files will probably 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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