-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: dnsmasq security update Advisory ID: RHSA-2017:2839-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2839 Issue date: 2017-10-02 CVE Names: CVE-2017-14491 ===================================================================== 1. Summary: An update for dnsmasq is now available for Red Hat Enterprise Linux 6.2 Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update Support, Red Hat Enterprise Linux 6.5 Advanced Update Support, Red Hat Enterprise Linux 6.5 Telco Extended Update Support, Red Hat Enterprise Linux 6.6 Advanced Update Support, Red Hat Enterprise Linux 6.6 Telco Extended Update Support, and Red Hat Enterprise Linux 6.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux HPC Node EUS (v. 6.7) - x86_64 Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) - x86_64 Red Hat Enterprise Linux Server AUS (v. 6.2) - x86_64 Red Hat Enterprise Linux Server AUS (v. 6.4) - x86_64 Red Hat Enterprise Linux Server AUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server AUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.7) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server TUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server TUS (v. 6.6) - x86_64 3. Description: The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server. Security Fix(es): * A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) Red Hat would like to thank Felix Wilhelm (Google Security Team), Fermin J. Serna (Google Security Team), Gabriel Campana (Google Security Team), Kevin Hamacher (Google Security Team), and Ron Bowes (Google Security Team) for reporting this issue. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1495409 - CVE-2017-14491 dnsmasq: heap overflow in the code responsible for building DNS replies 6. Package List: Red Hat Enterprise Linux HPC Node EUS (v. 6.7): Source: dnsmasq-2.48-16.el6_7.1.src.rpm x86_64: dnsmasq-2.48-16.el6_7.1.x86_64.rpm dnsmasq-debuginfo-2.48-16.el6_7.1.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7): x86_64: dnsmasq-debuginfo-2.48-16.el6_7.1.x86_64.rpm dnsmasq-utils-2.48-16.el6_7.1.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 6.2): Source: dnsmasq-2.48-5.el6_2.2.src.rpm x86_64: dnsmasq-2.48-5.el6_2.2.x86_64.rpm dnsmasq-debuginfo-2.48-5.el6_2.2.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 6.4): Source: dnsmasq-2.48-13.el6_4.1.src.rpm x86_64: dnsmasq-2.48-13.el6_4.1.x86_64.rpm dnsmasq-debuginfo-2.48-13.el6_4.1.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 6.5): Source: dnsmasq-2.48-13.el6_5.1.src.rpm x86_64: dnsmasq-2.48-13.el6_5.1.x86_64.rpm dnsmasq-debuginfo-2.48-13.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 6.5): Source: dnsmasq-2.48-13.el6_5.1.src.rpm x86_64: dnsmasq-2.48-13.el6_5.1.x86_64.rpm dnsmasq-debuginfo-2.48-13.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 6.6): Source: dnsmasq-2.48-14.el6_6.1.src.rpm x86_64: dnsmasq-2.48-14.el6_6.1.x86_64.rpm dnsmasq-debuginfo-2.48-14.el6_6.1.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 6.6): Source: dnsmasq-2.48-14.el6_6.1.src.rpm x86_64: dnsmasq-2.48-14.el6_6.1.x86_64.rpm dnsmasq-debuginfo-2.48-14.el6_6.1.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.7): Source: dnsmasq-2.48-16.el6_7.1.src.rpm i386: dnsmasq-2.48-16.el6_7.1.i686.rpm dnsmasq-debuginfo-2.48-16.el6_7.1.i686.rpm ppc64: dnsmasq-2.48-16.el6_7.1.ppc64.rpm dnsmasq-debuginfo-2.48-16.el6_7.1.ppc64.rpm s390x: dnsmasq-2.48-16.el6_7.1.s390x.rpm dnsmasq-debuginfo-2.48-16.el6_7.1.s390x.rpm x86_64: dnsmasq-2.48-16.el6_7.1.x86_64.rpm dnsmasq-debuginfo-2.48-16.el6_7.1.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.4): Source: dnsmasq-2.48-13.el6_4.1.src.rpm x86_64: dnsmasq-debuginfo-2.48-13.el6_4.1.x86_64.rpm dnsmasq-utils-2.48-13.el6_4.1.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.5): Source: dnsmasq-2.48-13.el6_5.1.src.rpm x86_64: dnsmasq-debuginfo-2.48-13.el6_5.1.x86_64.rpm dnsmasq-utils-2.48-13.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 6.5): Source: dnsmasq-2.48-13.el6_5.1.src.rpm x86_64: dnsmasq-debuginfo-2.48-13.el6_5.1.x86_64.rpm dnsmasq-utils-2.48-13.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.6): x86_64: dnsmasq-debuginfo-2.48-14.el6_6.1.x86_64.rpm dnsmasq-utils-2.48-14.el6_6.1.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 6.6): x86_64: dnsmasq-debuginfo-2.48-14.el6_6.1.x86_64.rpm dnsmasq-utils-2.48-14.el6_6.1.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 6.7): i386: dnsmasq-debuginfo-2.48-16.el6_7.1.i686.rpm dnsmasq-utils-2.48-16.el6_7.1.i686.rpm ppc64: dnsmasq-debuginfo-2.48-16.el6_7.1.ppc64.rpm dnsmasq-utils-2.48-16.el6_7.1.ppc64.rpm s390x: dnsmasq-debuginfo-2.48-16.el6_7.1.s390x.rpm dnsmasq-utils-2.48-16.el6_7.1.s390x.rpm x86_64: dnsmasq-debuginfo-2.48-16.el6_7.1.x86_64.rpm dnsmasq-utils-2.48-16.el6_7.1.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://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2017-14491 https://access.redhat.com/security/updates/classification/#critical https://access.redhat.com/security/vulnerabilities/3199382 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFZ0nLUXlSAg2UNWIIRAn39AKDCsn16dEmmA7DazjU2IOpWLIFp8QCeODoG 7t7GGwkabW2pC2Wcr35n/G8= =S/6b -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce