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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2008.0787 -- [RedHat] Moderate: dnsmasq security update 12 August 2008 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: dnsmasq Publisher: Red Hat Operating System: Red Hat Linux 5 Impact: Provide Misleading Information Access: Remote/Unauthenticated CVE Names: CVE-2008-1447 Ref: AL-2008.0080 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2008-0789.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== 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 http://kbase.redhat.com/faq/FAQ_58_10188 5. Bugs fixed (http://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: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/dnsmasq-2.45-1.el5_2.1.src.rpm 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: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/dnsmasq-2.45-1.el5_2.1.src.rpm 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: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1447 http://www.redhat.com/security/updates/classification/#moderate http://www.thekelleys.org.uk/dnsmasq/CHANGELOG 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFIoHCZXlSAg2UNWIIRAus2AJ9jMmf+E9RFFrC5FfXhCdEpJpxRaQCeIHu3 eLCw8SUQ204PyZI8K02NTEk= =p1Ic - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBSKDWbCh9+71yA2DNAQIupwP/ekMsQTJKpj1lFWG6cY+NU7UNwbVjvGPi wVHl21+XhBOu6lLnD4PDYfIoM6XhPEP2S0U8tSM/QnbDbCOYly84PpbJFVpiI+c+ 4D1T7JrMzuw+6NM2Opi2lD1tM8kjdy/zYOtgd9/NWOJZYu8PonnydsaHS2YrceV6 o1ORK/Bo+6s= =Tcv+ -----END PGP SIGNATURE-----