-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------ Debian Security Advisory DSA-1623-1 security@xxxxxxxxxx http://www.debian.org/security/ Moritz Muehlenhoff July 31, 2008 http://www.debian.org/security/faq - ------------------------------------------------------------------------ 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 - -------------------- 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 - ------------------------------- 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. - --------------------------------------------------------------------------------- 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 v1.4.9 (GNU/Linux) iEYEARECAAYFAkiR678ACgkQXm3vHE4uylo/FwCfbPnwQRkG0lRY/jyudA4e9E0n vr0An3eZgYMeA9rt/Q8M3StgSdXNtGJB =dKgq -----END PGP SIGNATURE-----
