Linux Security
Linux Security
Linux Security

Debian: freeswan DoS Vulnerability

Date 02 Dec 2002
Posted By LinuxSecurity Advisories
Free/SWan in Debain does not properly handle certain very short packets and is said to cause a kernel panic.

Debian Security Advisory DSA 201-1                     This email address is being protected from spambots. You need JavaScript enabled to view it.                             Martin Schulze
December 2nd, 2002             

Package        : freeswan
Vulnerability  : denial of service
Problem-type   : remore
Debian-specific: no
CERT advisory  : VU#459371

Bindview discovered a problem in several IPSEC implementations that do
not properly handle certain very short packets.  IPSEC is a set of
security extensions to IP which provide authentication and encryption.
Free/SWan in Debain is affected by this and is said to cause a kernel

This problem has been fixed in version 1.96-1.4 for the current stable
distribution (woody) and in version 1.99-1 for the unstable
distribution (sid).  The old stable distribution (potato) does not
contain Free/SWan packages.

We recommend that you upgrade your freeswan package.

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:      637 1917ba063e4058123034247ddb105bfa
      Size/MD5 checksum:   322480 ad70a2ecd67bbc1ae7b6eb6fcdb84da8
      Size/MD5 checksum:  2251757 9ea1a778713e48d39f3c77de5f54752b

  Architecture independent components:
      Size/MD5 checksum:   889918 30c73e274e84b62125136ec96160d23a

  Alpha architecture:
      Size/MD5 checksum:  1761260 2463d0474314aa775126544baea6ec95

  ARM architecture:
      Size/MD5 checksum:  1700504 f15929f25fb8bb953748edbe188511ba

  Intel IA-32 architecture:
      Size/MD5 checksum:  1678486 878523a3a03254bfa1e6a39052b50e1b

  Intel IA-64 architecture:
      Size/MD5 checksum:  1861640 8a1a611c76cd023311bae7126dfa5b8a

  HP Precision architecture:
      Size/MD5 checksum:  1723252 22df2896c7f4f96a693da436addc6d95

  Motorola 680x0 architecture:
      Size/MD5 checksum:  1660918 a55f47febd01eefd216e0da3b200de76

  Big endian MIPS architecture:
      Size/MD5 checksum:  1718046 e8fc45985fc4c25a2a9b9ab7d6e21e08

  Little endian MIPS architecture:
      Size/MD5 checksum:  1721266 c1bd4591da7f720d3fe7b4e134ac9f22

  PowerPC architecture:
      Size/MD5 checksum:  1688682 0e1b5ce54d414da362c7eeda097acfa9

  IBM S/390 architecture:
      Size/MD5 checksum:  1689648 fa2ac3caafbb37cbcde0138ba9b8f6c6

  Sun Sparc architecture:
      Size/MD5 checksum:  1706714 53ef4472274ffaac7e24455d9ec6c1a1

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

Survey on the use of Debian GNU/Linux 2.2 alias potato:

For apt-get: deb stable/updates main
For dpkg-ftp: 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


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