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Category:   Application (Multimedia)  >   Icecast Vendors:   Icecast.org
(Debian Issues Fix) Icecast Audio Broadcasting Server Discloses MP3 Files Located Anywhere on the Installed Drive to Remote Users and Can Be Crashed Remotely
SecurityTracker Alert ID:  1002904
SecurityTracker URL:  http://securitytracker.com/id/1002904
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Dec 5 2001
Impact:   Denial of service via network, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.3.7 for Windows
Description:   Two vulnerabilities have been reported in the Windows version of Icecast. The vulnerabilities allow remote users to cause the service to crash and allow remote users to obtain MP3 files located outside of the main Web catalog directory.

If the Icecast server has the http-server file streaming support enabled (which is not the default configuration), a remote user can reportedly cause the Icecast application to crash by adding an extra "/" or "\" to the end of the requested MP3 filename. The following format will trigger the vulnerability:

"http://[targethost]:8000/file/test.mp3/"

A remote user can can also retrieve MP3 files that reside outside of the Web catalog directory by using encoded characters in the MP3 request. A remote user can replace ascii-values for each ".", thus using "/%25%25/" instead of "/../" will up the directory tree. The following format will trigger the vulnerability (if test1.mp3 is located in the appropriate directory:

"http://[targethost]:8000/file/%2E%2E/test1.mp3

Impact:   A remote user can cause the Icecast server application to crash and can retrieve MP3 files from the drive the the server is installed on.
Solution:   The vendor has released a fix:

Debian GNU/Linux 2.2 alias potato
- ---------------------------------

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


Source archives:
http://security.debian.org/dists/stable/updates/main/source/icecast-server_1.3.10-1.dsc
MD5 checksum: 1bc6e9ad32ac36ee3aa696433e01238e
http://security.debian.org/dists/stable/updates/main/source/icecast-server_1.3.10-1.tar.gz
MD5 checksum: 7274a8795e854789f42713b9ce6adfff

Alpha architecture:
http://security.debian.org/dists/stable/updates/main/binary-alpha/icecast-server_1.3.10-1_alpha.deb
MD5 checksum: b35a6b302ee9a6acbd924f2fe3683880

ARM architecture:
http://security.debian.org/dists/stable/updates/main/binary-arm/icecast-server_1.3.10-1_arm.deb
MD5 checksum: 10da80b8b3aa0b0d94203f1b42a257b8

Intel IA-32 architecture:
http://security.debian.org/dists/stable/updates/main/binary-i386/icecast-server_1.3.10-1_i386.deb
MD5 checksum: eb3869696168f5fad229166490061d4b

Motorola 680x0 architecture:
http://security.debian.org/dists/stable/updates/main/binary-m68k/icecast-server_1.3.10-1_m68k.deb
MD5 checksum: 879e091a75a3d68fbaabfff30651ff9a

PowerPC architecture:
http://security.debian.org/dists/stable/updates/main/binary-powerpc/icecast-server_1.3.10-1_powerpc.deb
MD5 checksum: 20d406a0dba293b046cbd65405894849

Sun Sparc architecture:
http://security.debian.org/dists/stable/updates/main/binary-sparc/icecast-server_1.3.10-1_sparc.deb
MD5 checksum: e4e7e37ccbb6993c67bd936cfa7b848b


These packages 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/ .

See the Source Message for the vendor's advisory containing directions on how to obtain the appropriate fix.

Vendor URL:  www.icecast.org/ (Links to External Site)
Cause:   Access control error, Exception handling error, Input validation error
Underlying OS:  Linux (Debian)

Message History:   This archive entry is a follow-up to the message listed below.
Jun 26 2001 Icecast Audio Broadcasting Server Discloses MP3 Files Located Anywhere on the Installed Drive to Remote Users and Can Be Crashed Remotely



 Source Message Contents

Subject:  [SECURITY] [DSA-089-1] several problems in icecast-server


-----BEGIN PGP SIGNED MESSAGE-----

- ------------------------------------------------------------------------
Debian Security Advisory DSA-089-1                   security@debian.org
http://www.debian.org/security/                         Wichert Akkerman
December  5, 2001
- ------------------------------------------------------------------------


Package        : icecast-server
Problem type   : remote root exploit (and others)
Debian-specific: no

The icecast-server (a streaming music server) package as distributed
in Debian GNU/Linux 2.2 has several security problems:

* if a client added a / after the filename of a file to be downloaded
  the server would crash
* by escaping dots as %2E it was possible to circumvent security measures
  and download arbitrary files
* there were several buffer overflows that could be exploited to
  gain root access

These have been fixed in version 1.3.10-1, and we strongly recommend
that you upgrade your icecast-server package immediately.

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.


Debian GNU/Linux 2.2 alias potato
- ---------------------------------

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


  Source archives:
    http://security.debian.org/dists/stable/updates/main/source/icecast-server_1.3.10-1.dsc
      MD5 checksum: 1bc6e9ad32ac36ee3aa696433e01238e
    http://security.debian.org/dists/stable/updates/main/source/icecast-server_1.3.10-1.tar.gz
      MD5 checksum: 7274a8795e854789f42713b9ce6adfff

  Alpha architecture:
    http://security.debian.org/dists/stable/updates/main/binary-alpha/icecast-server_1.3.10-1_alpha.deb
      MD5 checksum: b35a6b302ee9a6acbd924f2fe3683880

  ARM architecture:
    http://security.debian.org/dists/stable/updates/main/binary-arm/icecast-server_1.3.10-1_arm.deb
      MD5 checksum: 10da80b8b3aa0b0d94203f1b42a257b8

  Intel IA-32 architecture:
    http://security.debian.org/dists/stable/updates/main/binary-i386/icecast-server_1.3.10-1_i386.deb
      MD5 checksum: eb3869696168f5fad229166490061d4b

  Motorola 680x0 architecture:
    http://security.debian.org/dists/stable/updates/main/binary-m68k/icecast-server_1.3.10-1_m68k.deb
      MD5 checksum: 879e091a75a3d68fbaabfff30651ff9a

  PowerPC architecture:
    http://security.debian.org/dists/stable/updates/main/binary-powerpc/icecast-server_1.3.10-1_powerpc.deb
      MD5 checksum: 20d406a0dba293b046cbd65405894849

  Sun Sparc architecture:
    http://security.debian.org/dists/stable/updates/main/binary-sparc/icecast-server_1.3.10-1_sparc.deb
      MD5 checksum: e4e7e37ccbb6993c67bd936cfa7b848b


  These packages 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/ .

- -- 
- ----------------------------------------------------------------------------
apt-get: deb http://security.debian.org/ stable/updates main
dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org

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