-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: glibc security and bug fix update Advisory ID: RHSA-2015:0863-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0863.html Issue date: 2015-04-21 CVE Names: CVE-2013-7423 CVE-2015-1781 ===================================================================== 1. Summary: Updated glibc packages that fix two security issues and one bug are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the Name Server Caching Daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. A buffer overflow flaw was found in the way glibc's gethostbyname_r() and other related functions computed the size of a buffer when passed a misaligned buffer as input. An attacker able to make an application call any of these functions with a misaligned buffer could use this flaw to crash the application or, potentially, execute arbitrary code with the permissions of the user running the application. (CVE-2015-1781) It was discovered that, under certain circumstances, glibc's getaddrinfo() function would send DNS queries to random file descriptors. An attacker could potentially use this flaw to send DNS queries to unintended recipients, resulting in information disclosure or data loss due to the application encountering corrupted data. (CVE-2013-7423) The CVE-2015-1781 issue was discovered by Arjun Shankar of Red Hat. This update also fixes the following bug: * Previously, the nscd daemon did not properly reload modified data when the user edited monitored nscd configuration files. As a consequence, nscd returned stale data to system processes. This update adds a system of inotify-based monitoring and stat-based backup monitoring for nscd configuration files. As a result, nscd now detects changes to its configuration files and reloads the data properly, which prevents it from returning stale data. (BZ#1194149) All glibc users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1187109 - CVE-2013-7423 glibc: getaddrinfo() writes DNS queries to random file descriptors under high load 1199525 - CVE-2015-1781 glibc: buffer overflow in gethostbyname_r() and related functions with misaligned buffer 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: glibc-2.12-1.149.el6_6.7.src.rpm i386: glibc-2.12-1.149.el6_6.7.i686.rpm glibc-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-devel-2.12-1.149.el6_6.7.i686.rpm glibc-headers-2.12-1.149.el6_6.7.i686.rpm glibc-utils-2.12-1.149.el6_6.7.i686.rpm nscd-2.12-1.149.el6_6.7.i686.rpm x86_64: glibc-2.12-1.149.el6_6.7.i686.rpm glibc-2.12-1.149.el6_6.7.x86_64.rpm glibc-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-devel-2.12-1.149.el6_6.7.i686.rpm glibc-devel-2.12-1.149.el6_6.7.x86_64.rpm glibc-headers-2.12-1.149.el6_6.7.x86_64.rpm glibc-utils-2.12-1.149.el6_6.7.x86_64.rpm nscd-2.12-1.149.el6_6.7.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-static-2.12-1.149.el6_6.7.i686.rpm x86_64: glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-static-2.12-1.149.el6_6.7.i686.rpm glibc-static-2.12-1.149.el6_6.7.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: glibc-2.12-1.149.el6_6.7.src.rpm x86_64: glibc-2.12-1.149.el6_6.7.i686.rpm glibc-2.12-1.149.el6_6.7.x86_64.rpm glibc-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-devel-2.12-1.149.el6_6.7.i686.rpm glibc-devel-2.12-1.149.el6_6.7.x86_64.rpm glibc-headers-2.12-1.149.el6_6.7.x86_64.rpm glibc-utils-2.12-1.149.el6_6.7.x86_64.rpm nscd-2.12-1.149.el6_6.7.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-static-2.12-1.149.el6_6.7.i686.rpm glibc-static-2.12-1.149.el6_6.7.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: glibc-2.12-1.149.el6_6.7.src.rpm i386: glibc-2.12-1.149.el6_6.7.i686.rpm glibc-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-devel-2.12-1.149.el6_6.7.i686.rpm glibc-headers-2.12-1.149.el6_6.7.i686.rpm glibc-utils-2.12-1.149.el6_6.7.i686.rpm nscd-2.12-1.149.el6_6.7.i686.rpm ppc64: glibc-2.12-1.149.el6_6.7.ppc.rpm glibc-2.12-1.149.el6_6.7.ppc64.rpm glibc-common-2.12-1.149.el6_6.7.ppc64.rpm glibc-debuginfo-2.12-1.149.el6_6.7.ppc.rpm glibc-debuginfo-2.12-1.149.el6_6.7.ppc64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.ppc.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.ppc64.rpm glibc-devel-2.12-1.149.el6_6.7.ppc.rpm glibc-devel-2.12-1.149.el6_6.7.ppc64.rpm glibc-headers-2.12-1.149.el6_6.7.ppc64.rpm glibc-utils-2.12-1.149.el6_6.7.ppc64.rpm nscd-2.12-1.149.el6_6.7.ppc64.rpm s390x: glibc-2.12-1.149.el6_6.7.s390.rpm glibc-2.12-1.149.el6_6.7.s390x.rpm glibc-common-2.12-1.149.el6_6.7.s390x.rpm glibc-debuginfo-2.12-1.149.el6_6.7.s390.rpm glibc-debuginfo-2.12-1.149.el6_6.7.s390x.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.s390.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.s390x.rpm glibc-devel-2.12-1.149.el6_6.7.s390.rpm glibc-devel-2.12-1.149.el6_6.7.s390x.rpm glibc-headers-2.12-1.149.el6_6.7.s390x.rpm glibc-utils-2.12-1.149.el6_6.7.s390x.rpm nscd-2.12-1.149.el6_6.7.s390x.rpm x86_64: glibc-2.12-1.149.el6_6.7.i686.rpm glibc-2.12-1.149.el6_6.7.x86_64.rpm glibc-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-devel-2.12-1.149.el6_6.7.i686.rpm glibc-devel-2.12-1.149.el6_6.7.x86_64.rpm glibc-headers-2.12-1.149.el6_6.7.x86_64.rpm glibc-utils-2.12-1.149.el6_6.7.x86_64.rpm nscd-2.12-1.149.el6_6.7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-static-2.12-1.149.el6_6.7.i686.rpm ppc64: glibc-debuginfo-2.12-1.149.el6_6.7.ppc.rpm glibc-debuginfo-2.12-1.149.el6_6.7.ppc64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.ppc.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.ppc64.rpm glibc-static-2.12-1.149.el6_6.7.ppc.rpm glibc-static-2.12-1.149.el6_6.7.ppc64.rpm s390x: glibc-debuginfo-2.12-1.149.el6_6.7.s390.rpm glibc-debuginfo-2.12-1.149.el6_6.7.s390x.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.s390.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.s390x.rpm glibc-static-2.12-1.149.el6_6.7.s390.rpm glibc-static-2.12-1.149.el6_6.7.s390x.rpm x86_64: glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-static-2.12-1.149.el6_6.7.i686.rpm glibc-static-2.12-1.149.el6_6.7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: glibc-2.12-1.149.el6_6.7.src.rpm i386: glibc-2.12-1.149.el6_6.7.i686.rpm glibc-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-devel-2.12-1.149.el6_6.7.i686.rpm glibc-headers-2.12-1.149.el6_6.7.i686.rpm glibc-utils-2.12-1.149.el6_6.7.i686.rpm nscd-2.12-1.149.el6_6.7.i686.rpm x86_64: glibc-2.12-1.149.el6_6.7.i686.rpm glibc-2.12-1.149.el6_6.7.x86_64.rpm glibc-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-devel-2.12-1.149.el6_6.7.i686.rpm glibc-devel-2.12-1.149.el6_6.7.x86_64.rpm glibc-headers-2.12-1.149.el6_6.7.x86_64.rpm glibc-utils-2.12-1.149.el6_6.7.x86_64.rpm nscd-2.12-1.149.el6_6.7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-static-2.12-1.149.el6_6.7.i686.rpm x86_64: glibc-debuginfo-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-2.12-1.149.el6_6.7.x86_64.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.i686.rpm glibc-debuginfo-common-2.12-1.149.el6_6.7.x86_64.rpm glibc-static-2.12-1.149.el6_6.7.i686.rpm glibc-static-2.12-1.149.el6_6.7.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-2013-7423 https://access.redhat.com/security/cve/CVE-2015-1781 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVNjZcXlSAg2UNWIIRAh/vAJ9G7IfTpj10LLreiOJXlgHOKyyxUQCbB8c+ EUh5mWbL+UqNLADhrfGmOYk= =+85j -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce