Debian Security Advisory DSA 530-1                     security@debian.org 
Debian -- Security Information                              Matt Zimmerman
July 17th, 2004                          Debian -- Debian security FAQ 
- --------------------------------------------------------------------------

Package        : l2tpd
Vulnerability  : buffer overflow
Problem-Type   : remote
Debian-specific: no
CVE Ids        : CAN-2004-0649

Thomas Walpuski reported a buffer overflow in l2tpd, an implementation
of the layer 2 tunneling protocol, whereby a remote attacker could
potentially cause arbitrary code to be executed by transmitting a
specially crafted packet.  The exploitability of this vulnerability
has not been verified.

For the current stable distribution (woody), this problem has been
fixed in version 0.67-1.2.

For the unstable distribution (sid), this problem has been fixed in
version 0.70-pre20031121-2.

We recommend that you update your l2tpd 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:

      
      Size/MD5 checksum:      556 7dea8c1dda28eeea5d17f2e3eef27ef6
      
      Size/MD5 checksum:     2756 fd3fcde3269326d01187ee6e860c0219
      
      Size/MD5 checksum:   121685 d40065070e34c44389e4c749b61916c6

  Alpha architecture:

      
      Size/MD5 checksum:    99940 a3caa77d343536f68753ea64aa336a45

  ARM architecture:

      
      Size/MD5 checksum:    90958 5030f6fcd05f33875542e4c1da3e553f

  Intel IA-32 architecture:

      
      Size/MD5 checksum:    87946 456410152e2a33ceb07acff26b0dea61

  Intel IA-64 architecture:

      
      Size/MD5 checksum:   110936 12debc780c212f23ae5b8c313e2e51f1

  HP Precision architecture:

      
      Size/MD5 checksum:    95130 35687ebaea9442cef6e93b838071da97

  Motorola 680x0 architecture:

      
      Size/MD5 checksum:    84972 fd4e1e3016d651eeecc3e3af6df67511

  Big endian MIPS architecture:

      
      Size/MD5 checksum:    94778 c757bcea1d651ba7a5e995edaad2fe9e

  Little endian MIPS architecture:

      
      Size/MD5 checksum:    95122 2ca8db2f234ac416791c09b9b3b1de68

  PowerPC architecture:

      
      Size/MD5 checksum:    89470 3ef1b4d68491e25efe134331d90fd01c

  IBM S/390 architecture:

      
      Size/MD5 checksum:    88580 52bd54f9df953734be455a3b595db411

  Sun Sparc architecture:

      
      Size/MD5 checksum:    91992 34513399dd07a1aed7f4b96904f5a2db

  These files will probably be moved into the stable distribution on
  its next revision.

- ---------------------------------------------------------------------------------
For apt-get: deb  Debian -- Security Information  stable/updates main
For dpkg-ftp:    dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show ' and  http://packages.debian.org/

Debian: l2tpd Buffer overflow vulnerability

July 22, 2004
By exploting this, a remote attacker could potentially cause arbitrary code to be executed by transmitting a specially crafted packet.

Summary

Thomas Walpuski reported a buffer overflow in l2tpd, an implementation
of the layer 2 tunneling protocol, whereby a remote attacker could
potentially cause arbitrary code to be executed by transmitting a
specially crafted packet. The exploitability of this vulnerability
has not been verified.

For the current stable distribution (woody), this problem has been
fixed in version 0.67-1.2.

For the unstable distribution (sid), this problem has been fixed in
version 0.70-pre20031121-2.

We recommend that you update your l2tpd 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:


Size/MD5 checksum: 556 7dea8c1dda28eeea5d17f2e3eef27ef6

Size/MD5 checksum: 2756 fd3fcde3269326d01187ee6e860c0219

Size/MD5 checksum: 121685 d40065070e34c44389e4c749b61916c6

Alpha architecture:


Size/MD5 checksum: 99940 a3caa77d343536f68753ea64aa336a45

ARM architecture:


Size/MD5 checksum: 90958 5030f6fcd05f33875542e4c1da3e553f

Intel IA-32 architecture:


Size/MD5 checksum: 87946 456410152e2a33ceb07acff26b0dea61

Intel IA-64 architecture:


Size/MD5 checksum: 110936 12debc780c212f23ae5b8c313e2e51f1

HP Precision architecture:


Size/MD5 checksum: 95130 35687ebaea9442cef6e93b838071da97

Motorola 680x0 architecture:


Size/MD5 checksum: 84972 fd4e1e3016d651eeecc3e3af6df67511

Big endian MIPS architecture:


Size/MD5 checksum: 94778 c757bcea1d651ba7a5e995edaad2fe9e

Little endian MIPS architecture:


Size/MD5 checksum: 95122 2ca8db2f234ac416791c09b9b3b1de68

PowerPC architecture:


Size/MD5 checksum: 89470 3ef1b4d68491e25efe134331d90fd01c

IBM S/390 architecture:


Size/MD5 checksum: 88580 52bd54f9df953734be455a3b595db411

Sun Sparc architecture:


Size/MD5 checksum: 91992 34513399dd07a1aed7f4b96904f5a2db

These files will probably be moved into the stable distribution on
its next revision.

For apt-get: deb Debian -- Security Information stable/updates main
For dpkg-ftp: dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show ' and http://packages.debian.org/



Severity
Package : l2tpd
Vulnerability : buffer overflow
Problem-Type : remote
Debian-specific: no
CVE Ids : CAN-2004-0649

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