Linux Security
    Linux Security
    Linux Security

    Debian: 'nis' vulnerability

    Date 16 Oct 2000
    Posted By LinuxSecurity Advisories
    The version of nis as distributed in Debian GNU/Linux 2.1 and 2.2 contains an ypbind package with a security problem.
    - ------------------------------------------------------------------------
    Debian Security Advisory                             This email address is being protected from spambots. You need JavaScript enabled to view it.                         Wichert Akkerman
    October 14, 2000
    - ------------------------------------------------------------------------
    Package        : nis
    Problem type   : local exploit
    Debian-specific: no
    The version of nis as distributed in Debian GNU/Linux 2.1 and 2.2
    contains an ypbind package with a security problem.
    ypbind is used to request information from a nis server which is then
    used by the local machine. The logging code in ypbind was vulnerable to a
    printf formating attack which can be exploited by passing ypbind a
    carefully crafted request. This way ypbind can be made to run arbitrary
    code as root.
    This has been fixed in version 3.5-2.1 for Debian GNU/Linux 2.1 and
    version 3.8-0.1 for Debian GNU/Linux 2.2 .
    We recommend you upgrade your nis package immediately.
    wget url
            will fetch the file for you
    dpkg -i file.deb
            will install the referenced file.
    Debian GNU/Linux 2.1 alias slink
    - --------------------------------
      Slink was released for alpha, i386, m68k and sparc. At this moment
      security updates for alpha and sparc are no longer being made.
      Support for i386 and m68k will continue until the end of this month.
      Source archives:
          MD5 checksum: 979ec602bf463eae2b25c1a7d6828806
          MD5 checksum: 69510c35dbca3a0be81f67fc9af0e8be
          MD5 checksum: 368167b1e16eb25ac639935310a26daa
      Intel ia32 architecture:
          MD5 checksum: 8400a6695d570315106391cab7108347
      Motorola 680x0 architecture:

          MD5 checksum: d330f7a091a215f63181b9acee69661b
    Debian GNU/Linux 2.2 alias potato
    - ---------------------------------
      Potato was released for alpha, arm, i386, m68k, powerpc and sparc.
      Alpha architecture:
          MD5 checksum: 1e361e5a9671c02eafdddeee4071f2cb
      Source archives:
          MD5 checksum: e15a7c09037c25fbd30c4721d683d068
          MD5 checksum: 53d579eafd697b23cc0dba76a4566c2e
          MD5 checksum: 69bd8aa6b24cb22266cdc04354d3e287
      ARM architecture:
          MD5 checksum: a1ba8db1065c56a1d18c063f6a69218b
      Intel ia32 architecture:
          MD5 checksum: b1a4588f81c0fda4815172d5a2bee134
      PowerPC architecture:
          MD5 checksum: 5ac411b1d68da664649c1828962ee985
      Sun Sparc architecture:
          MD5 checksum: 063c6e424da6ad714a3be5e85be034b9
      These files will be moved into*/binary-$arch/ soon.
    For not yet released architectures please refer to the appropriate
    directory$arch/ .
    - --
    - ----------------------------------------------------------------------------
    apt-get: deb stable/updates main
    dpkg-ftp: dists/stable/updates/main

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