-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: glibc security and bug fix update Advisory ID: RHSA-2015:0327-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0327.html Issue date: 2015-03-05 CVE Names: CVE-2014-6040 CVE-2014-8121 ===================================================================== 1. Summary: Updated glibc packages that fix two security issues and several bugs are now available for Red Hat Enterprise Linux 7. 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 Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - 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. An out-of-bounds read flaw was found in the way glibc's iconv() function converted certain encoded data to UTF-8. An attacker able to make an application call the iconv() function with a specially crafted argument could use this flaw to crash that application. (CVE-2014-6040) It was found that the files back end of Name Service Switch (NSS) did not isolate iteration over an entire database from key-based look-up API calls. An application performing look-ups on a database while iterating over it could enter an infinite loop, leading to a denial of service. (CVE-2014-8121) This update also fixes the following bugs: * Due to problems with buffer extension and reallocation, the nscd daemon terminated unexpectedly with a segmentation fault when processing long netgroup entries. With this update, the handling of long netgroup entries has been corrected and nscd no longer crashes in the described scenario. (BZ#1138520) * If a file opened in append mode was truncated with the ftruncate() function, a subsequent ftell() call could incorrectly modify the file offset. This update ensures that ftell() modifies the stream state only when it is in append mode and the buffer for the stream is not empty. (BZ#1156331) * A defect in the C library headers caused builds with older compilers to generate incorrect code for the btowc() function in the older compatibility C++ standard library. Applications calling btowc() in the compatibility C++ standard library became unresponsive. With this update, the C library headers have been corrected, and the compatibility C++ standard library shipped with Red Hat Enterprise Linux has been rebuilt. Applications that rely on the compatibility C++ standard library no longer hang when calling btowc(). (BZ#1120490) * Previously, when using netgroups and the nscd daemon was set up to cache netgroup information, the sudo utility denied access to valid users. The bug in nscd has been fixed, and sudo now works in netgroups as expected. (BZ#1080766) Users of glibc are advised to upgrade to these updated packages, which fix 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/): 1103874 - Fix memory fencing error in unwind-forcedunwind.c 1124453 - getconf PATH returns non-directory "/bin" 1135841 - CVE-2014-6040 glibc: crash in code page decoding functions (IBM933, IBM935, IBM937, IBM939, IBM1364) 1138520 - nscd segfaults when running sudo with netgroup caching enabled. 1165192 - CVE-2014-8121 glibc: Unexpected closing of nss_files databases after lookups causes denial of service 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: glibc-2.17-78.el7.src.rpm x86_64: glibc-2.17-78.el7.i686.rpm glibc-2.17-78.el7.x86_64.rpm glibc-common-2.17-78.el7.x86_64.rpm glibc-debuginfo-2.17-78.el7.i686.rpm glibc-debuginfo-2.17-78.el7.x86_64.rpm glibc-debuginfo-common-2.17-78.el7.i686.rpm glibc-debuginfo-common-2.17-78.el7.x86_64.rpm glibc-devel-2.17-78.el7.i686.rpm glibc-devel-2.17-78.el7.x86_64.rpm glibc-headers-2.17-78.el7.x86_64.rpm glibc-utils-2.17-78.el7.x86_64.rpm nscd-2.17-78.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: glibc-debuginfo-2.17-78.el7.i686.rpm glibc-debuginfo-2.17-78.el7.x86_64.rpm glibc-debuginfo-common-2.17-78.el7.i686.rpm glibc-debuginfo-common-2.17-78.el7.x86_64.rpm glibc-static-2.17-78.el7.i686.rpm glibc-static-2.17-78.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: glibc-2.17-78.el7.src.rpm x86_64: glibc-2.17-78.el7.i686.rpm glibc-2.17-78.el7.x86_64.rpm glibc-common-2.17-78.el7.x86_64.rpm glibc-debuginfo-2.17-78.el7.i686.rpm glibc-debuginfo-2.17-78.el7.x86_64.rpm glibc-debuginfo-common-2.17-78.el7.i686.rpm glibc-debuginfo-common-2.17-78.el7.x86_64.rpm glibc-devel-2.17-78.el7.i686.rpm glibc-devel-2.17-78.el7.x86_64.rpm glibc-headers-2.17-78.el7.x86_64.rpm glibc-utils-2.17-78.el7.x86_64.rpm nscd-2.17-78.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: glibc-debuginfo-2.17-78.el7.i686.rpm glibc-debuginfo-2.17-78.el7.x86_64.rpm glibc-debuginfo-common-2.17-78.el7.i686.rpm glibc-debuginfo-common-2.17-78.el7.x86_64.rpm glibc-static-2.17-78.el7.i686.rpm glibc-static-2.17-78.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: glibc-2.17-78.el7.src.rpm ppc64: glibc-2.17-78.el7.ppc.rpm glibc-2.17-78.el7.ppc64.rpm glibc-common-2.17-78.el7.ppc64.rpm glibc-debuginfo-2.17-78.el7.ppc.rpm glibc-debuginfo-2.17-78.el7.ppc64.rpm glibc-debuginfo-common-2.17-78.el7.ppc.rpm glibc-debuginfo-common-2.17-78.el7.ppc64.rpm glibc-devel-2.17-78.el7.ppc.rpm glibc-devel-2.17-78.el7.ppc64.rpm glibc-headers-2.17-78.el7.ppc64.rpm glibc-utils-2.17-78.el7.ppc64.rpm nscd-2.17-78.el7.ppc64.rpm s390x: glibc-2.17-78.el7.s390.rpm glibc-2.17-78.el7.s390x.rpm glibc-common-2.17-78.el7.s390x.rpm glibc-debuginfo-2.17-78.el7.s390.rpm glibc-debuginfo-2.17-78.el7.s390x.rpm glibc-debuginfo-common-2.17-78.el7.s390.rpm glibc-debuginfo-common-2.17-78.el7.s390x.rpm glibc-devel-2.17-78.el7.s390.rpm glibc-devel-2.17-78.el7.s390x.rpm glibc-headers-2.17-78.el7.s390x.rpm glibc-utils-2.17-78.el7.s390x.rpm nscd-2.17-78.el7.s390x.rpm x86_64: glibc-2.17-78.el7.i686.rpm glibc-2.17-78.el7.x86_64.rpm glibc-common-2.17-78.el7.x86_64.rpm glibc-debuginfo-2.17-78.el7.i686.rpm glibc-debuginfo-2.17-78.el7.x86_64.rpm glibc-debuginfo-common-2.17-78.el7.i686.rpm glibc-debuginfo-common-2.17-78.el7.x86_64.rpm glibc-devel-2.17-78.el7.i686.rpm glibc-devel-2.17-78.el7.x86_64.rpm glibc-headers-2.17-78.el7.x86_64.rpm glibc-utils-2.17-78.el7.x86_64.rpm nscd-2.17-78.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: glibc-debuginfo-2.17-78.el7.ppc.rpm glibc-debuginfo-2.17-78.el7.ppc64.rpm glibc-debuginfo-common-2.17-78.el7.ppc.rpm glibc-debuginfo-common-2.17-78.el7.ppc64.rpm glibc-static-2.17-78.el7.ppc.rpm glibc-static-2.17-78.el7.ppc64.rpm s390x: glibc-debuginfo-2.17-78.el7.s390.rpm glibc-debuginfo-2.17-78.el7.s390x.rpm glibc-debuginfo-common-2.17-78.el7.s390.rpm glibc-debuginfo-common-2.17-78.el7.s390x.rpm glibc-static-2.17-78.el7.s390.rpm glibc-static-2.17-78.el7.s390x.rpm x86_64: glibc-debuginfo-2.17-78.el7.i686.rpm glibc-debuginfo-2.17-78.el7.x86_64.rpm glibc-debuginfo-common-2.17-78.el7.i686.rpm glibc-debuginfo-common-2.17-78.el7.x86_64.rpm glibc-static-2.17-78.el7.i686.rpm glibc-static-2.17-78.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: glibc-2.17-78.el7.src.rpm x86_64: glibc-2.17-78.el7.i686.rpm glibc-2.17-78.el7.x86_64.rpm glibc-common-2.17-78.el7.x86_64.rpm glibc-debuginfo-2.17-78.el7.i686.rpm glibc-debuginfo-2.17-78.el7.x86_64.rpm glibc-debuginfo-common-2.17-78.el7.i686.rpm glibc-debuginfo-common-2.17-78.el7.x86_64.rpm glibc-devel-2.17-78.el7.i686.rpm glibc-devel-2.17-78.el7.x86_64.rpm glibc-headers-2.17-78.el7.x86_64.rpm glibc-utils-2.17-78.el7.x86_64.rpm nscd-2.17-78.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: glibc-debuginfo-2.17-78.el7.i686.rpm glibc-debuginfo-2.17-78.el7.x86_64.rpm glibc-debuginfo-common-2.17-78.el7.i686.rpm glibc-debuginfo-common-2.17-78.el7.x86_64.rpm glibc-static-2.17-78.el7.i686.rpm glibc-static-2.17-78.el7.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-2014-6040 https://access.redhat.com/security/cve/CVE-2014-8121 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 iD8DBQFU+G0jXlSAg2UNWIIRAinCAJ9TnVVjNrWKqyabgFdA1Itf53M0uACfcunQ 4VVcn4EsVKgxJ2kqkFg2sxc= =mUlw -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce