Articles / Debian: New sendfile packag…

Debian: New sendfile packages fix root exploit

Daniel Kobras has discovered and fixed a problem in sendfiled which caused the daemon not to drop privileges as expected when sending notification mails. Exploiting this a local user can easily make it execute arbitrary code under root privileges. Updated packages can be obtained from security.debian.org.
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Hash: SHA1

- ----------------------------------------------------------------------------
Debian Security Advisory DSA 052-1                       security@debian.org
http://www.debian.org/security/                               Martin Schulze
April 23, 2001
- ----------------------------------------------------------------------------

Package        : sendfile
Vulnerability  : broken privileges dropping
Problem-Type   : local root exploit
Debian-specific: no

Daniel Kobras has discovered and fixed a problem in sendfiled which
caused the daemon not to drop privileges as expected when sendnig
notification mails.  Exploiting this a local user can easily make it
execute arbitrary code under root privileges.

We recommend that you upgrade your sendfile packages 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
- ------------------------------------

  Potato was released for the alpha, arm, i386, m68k, powerpc and sparc
  architectures.


  Source archives:

    http://security.debian.org/dists/stable/updates/main/source/sendfile_2.1-20.3.diff.gz
      MD5 checksum: 91355d38eb584f73686fc277edb9d6aa
    http://security.debian.org/dists/stable/updates/main/source/sendfile_2.1-20.3.dsc
      MD5 checksum: c9fea4f8195620c2a05088953dbf3306
    http://security.debian.org/dists/stable/updates/main/source/sendfile_2.1.orig.tar.gz
      MD5 checksum: cff003126595d8e77143c42ef898dc10

  Alpha architecture:

    http://security.debian.org/dists/stable/updates/main/binary-alpha/sendfile_2.1-20.3_alpha.deb
      MD5 checksum: 94f00bf4b61d0ef2b71014be3e09dc33

  ARM architecture:

    http://security.debian.org/dists/stable/updates/main/binary-arm/sendfile_2.1-20.3_arm.deb
      MD5 checksum: affd585c9ea55d9b466263161b295dbb

  Intel ia32 architecture:

    http://security.debian.org/dists/stable/updates/main/binary-i386/sendfile_2.1-20.3_i386.deb
      MD5 checksum: 0b8437721a0e93672fbecb672c1e3ad3

  Motorola 680x0 architecture:

    http://security.debian.org/dists/stable/updates/main/binary-m68k/sendfile_2.1-20.3_m68k.deb
      MD5 checksum: fbb6585f80028d6af6dfdf2267f0b29a

  PowerPC architecture:

    http://security.debian.org/dists/stable/updates/main/binary-powerpc/sendfile_2.1-20.3_powerpc.deb
      MD5 checksum: 4f355d75c926837ae769c7322f9ec3e3

  Sun Sparc architecture:

    http://security.debian.org/dists/stable/updates/main/binary-sparc/sendfile_2.1-20.3_sparc.deb
      MD5 checksum: 0f062e9333c54bfd92e6477e0f4a984e


  These files 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/ .

- ----------------------------------------------------------------------------
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: debian-security-announce@lists.debian.org
Package info: `apt-cache show ' and http://packages.debian.org/

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Recent comments

05 May 2001 02:46 Avatar jmluster

Good morning, Debian
This vulnerability had been fixed by Ulli (the author) a
long time ago and resulted in a new version. Maybe the
packetmaintainer should look out for his packets a bit
better.

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