==================================================================== Red Hat Security Advisory Synopsis: Moderate: dnsmasq security update Advisory ID: RHSA-2008:0789-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0789.html Issue date: 2008-08-11 CVE Names: CVE-2008-1447 ==================================================================== 1. Summary: An updated dnsmasq package that implements UDP source-port randomization is now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 3. Description: Dnsmasq is lightweight DNS forwarder and DHCP server. It is designed to provide DNS and, optionally, DHCP, to a small network. The dnsmasq DNS resolver used a fixed source UDP port. This could have made DNS spoofing attacks easier. dnsmasq has been updated to use random UDP source ports, helping to make DNS spoofing attacks harder. (CVE-2008-1447) All dnsmasq users are advised to upgrade to this updated package, that upgrades dnsmasq to version 2.45, which resolves this issue. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at 5. Bugs fixed (https://bugzilla.redhat.com/): 449345 - CVE-2008-1447 implement source UDP port randomization (CERT VU#800113) 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: i386: dnsmasq-2.45-1.el5_2.1.i386.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.i386.rpm x86_64: dnsmasq-2.45-1.el5_2.1.x86_64.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: i386: dnsmasq-2.45-1.el5_2.1.i386.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.i386.rpm ia64: dnsmasq-2.45-1.el5_2.1.ia64.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.ia64.rpm ppc: dnsmasq-2.45-1.el5_2.1.ppc.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.ppc.rpm s390x: dnsmasq-2.45-1.el5_2.1.s390x.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.s390x.rpm x86_64: dnsmasq-2.45-1.el5_2.1.x86_64.rpm dnsmasq-debuginfo-2.45-1.el5_2.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1447 https://www.redhat.com/security/updates/classification/#moderate https://www.thekelleys.org.uk/dnsmasq/CHANGELOG 8. Contact: The Red Hat security contact is
. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc.