The Debian Security Team published a new security update for Debian GNU/Linux. Here the announcement:
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Debian Security Advisory DSA-1623-1 security@debian.org
http://www.debian.org/security/ Moritz Muehlenhoff
July 31, 2008 http://www.debian.org/security/faq
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Package : dnsmasq
Vulnerability : DNS cache poisoning
Problem type : remote
Debian-specific: no
CVE Id(s) : CVE-2008-1447

Dan Kaminsky discovered that properties inherent to the DNS protocol
lead to practical DNS cache poisoning attacks. Among other things,
successful attacks can lead to misdirected web traffic and email
rerouting.

This update changes Debian's dnsmasq packages to implement the
recommended countermeasure: UDP query source port randomization. This
change increases the size of the space from which an attacker has to
guess values in a backwards-compatible fashion and makes successful
attacks significantly more difficult.

This update also switches the random number generator to Dan
Bernstein's SURF.

For the stable distribution (etch), this problem has been fixed in
version 2.35-1+etch4. Packages for alpha will be provided later.

For the unstable distribution (sid), this problem has been fixed in
version 2.43-1.

We recommend that you upgrade your dnsmasq package.

Upgrade instructions
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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 4.0 alias etch
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Stable updates are available for amd64, arm, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc.

Source archives:

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4.dsc
Size/MD5 checksum: 596 3834461c89e55467b4b65ed4ac209e81
http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35.orig.tar.gz
Size/MD5 checksum: 252901 ad1fafeaf3442685cfe16613e0f8b777
http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4.diff.gz
Size/MD5 checksum: 19202 4ced7768f49198bd43bbbd24f2a3d3e4

amd64 architecture (AMD x86_64 (AMD64))

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_amd64.deb
Size/MD5 checksum: 188278 8fb55f694db9fdfccaa86d134e937777

arm architecture (ARM)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_arm.deb
Size/MD5 checksum: 181746 4caf23f31de937b817e12ade7d132eac

hppa architecture (HP PA RISC)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_hppa.deb
Size/MD5 checksum: 190490 66730e785683655b058d11aa70346be4

i386 architecture (Intel ia32)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_i386.deb
Size/MD5 checksum: 184546 1fbdd71e81a1e05d68b0f88eaeb00b10

ia64 architecture (Intel ia64)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_ia64.deb
Size/MD5 checksum: 223758 011f283b71ef0f9e07d5a9dce25db505

mips architecture (MIPS (Big Endian))

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_mips.deb
Size/MD5 checksum: 189846 5c67cca2eaedc1dff80c5fd05aa1d33f

mipsel architecture (MIPS (Little Endian))

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_mipsel.deb
Size/MD5 checksum: 191824 dfd87d69a7751f1e6ef2d0f1ede052ff

powerpc architecture (PowerPC)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_powerpc.deb
Size/MD5 checksum: 186890 93701abcca5421beddab015a7f35af99

s390 architecture (IBM S/390)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_s390.deb
Size/MD5 checksum: 186396 6f19f6c8d803c3d57e01e73fe1e11886

sparc architecture (Sun SPARC/UltraSPARC)

http://security.debian.org/pool/updates/main/d/dnsmasq/dnsmasq_2.35-1+etch4_sparc.deb
Size/MD5 checksum: 182910 f360078c14f715e90e60124b4ede2be9


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

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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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