Debian DSA-1703-1 moderate: BIND9 Remote Threat due to Cryptographic Issue

debian

January 12, 2009

It was discovered that BIND, an implementation of the DNS protocol suite, does not properly check the result of an OpenSSL function which is used to verify DSA cryptographic signat...

Topics Covered

security advisory update debian remote access bind9 cryptographic flaw dnssec

Summary

It was discovered that BIND, an implementation of the DNS protocol
suite, does not properly check the result of an OpenSSL function which
is used to verify DSA cryptographic signatures. As a result,
incorrect DNS resource records in zones protected by DNSSEC could be
accepted as genuine.

For the stable distribution (etch), this problem has been fixed in
version 9.3.4-2etch4.

For the unstable distribution (sid) and the testing distribution
(lenny), this problem will be fixed soon.

We recommend that you upgrade your BIND packages.

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 4.0 alias etch

...