-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------ Debian Security Advisory DSA-1604-1 security@xxxxxxxxxx http://www.debian.org/security/ Florian Weimer July 08, 2008 http://www.debian.org/security/faq - ------------------------------------------------------------------------ Package : bind Vulnerability : DNS cache poisoning Problem type : remote Debian-specific: no CVE Id(s) : CVE-2008-1447 CERT advisory : VU#800113 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. The BIND 8 legacy code base could not be updated to include the recommended countermeasure (source port randomization, see DSA-1603-1 for details). There are two ways to deal with this situation: 1. Upgrade to BIND 9 (or another implementation with source port randomization). The documentation included with BIND 9 contains a migration guide. 2. Configure the BIND 8 resolver to forward queries to a BIND 9 resolver. Provided that the network between both resolvers is trusted, this protects the BIND 8 resolver from cache poisoning attacks (to the same degree that the BIND 9 resolver is protected). This problem does not apply to BIND 8 when used exclusively as an authoritative DNS server. It is theoretically possible to safely use BIND 8 in this way, but updating to BIND 9 is strongly recommended. BIND 8 (that is, the bind package) will be removed from the etch distribution in a future point release. - --------------------------------------------------------------------------------- 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@xxxxxxxxxxxxxxxx Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iQEVAwUBSHOIFL97/wQC1SS+AQLZYAgAhiucKuHSkgZRjm1E9vUS4t9VmVhKdYB2 jDhG00WloZPxeBjHT0Ar1b4S/QGbDQ2Dy2hlMONsl5ZZWAbkzzANDsVIDC2xez5w NBqJjfEKYuk7Q3E+elyJ/z79F0HbMtO+SdagRoSbIV3nWfSoRI6jp+32Be69JazW Te3gLKOAm6TpdYPpn7wmw2pXeOKzeUaOh/npXAYH4YEKmqnxzJZy+0862kaKSQ8G 9qGIQ9zKCkPLs4bKt+JhpwWumfgaabGT6KlGAtC3ORBef54Ux/EdpNFEGBWvWrxU HOcPZGBJKxUAO4doJdRPNcFV4ez4u2v0WFK3bRM+JNgegnoplvnxuA== =vK+3 -----END PGP SIGNATURE-----
