4.6 - RHSA-2019:2118

Problem Description:

An update for glibc is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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 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, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, 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 service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

* glibc: getaddrinfo should reject IP addresses with trailing characters (CVE-2016-10739)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

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

For the update to take effect, all services linked to the glibc library must be restarted, or the system rebooted.

5. Bugs fixed (https://bugzilla.redhat.com/):

1039304 - glibc: More precise DNS name checks (accepting dash-.example.com, among other things) 1347549 - CVE-2016-10739 glibc: getaddrinfo should reject IP addresses with trailing characters 1443872 - glibc: Terminate process on invalid netlink response from kernel 1488370 - nscd: Add a comment to the default nscd.conf file that is it not recommended to use NSCD and SSSD for the same NSS maps 1555189 - glibc: The Japanese Era name will be changed on May 1, 2019 [rhel-7.7.0] 1579354 - glibc: Initialize msg_flags to zero for sendmmsg in resolver 1579730 - glibc: Fix i386 sigaction sa_restorer initialization 1579739 - glibc: Fix stack overflow with huge PT_NOTE segment 1591268 - glibc: Problem with iconv converting ISO8859-1 to IBM273 [rhel-7] 1592475 - glibc headers: add ipc STAT_ANY constants 1595191 - glibc: Backport libio vtable validation improvements 1609067 - pldd does not wait for SIGSTOP after PTRACE_ATTACH 1640764 - glibc-rh1505492-prototypes-intl.patch causes intermittent problems building glibc 1641981 - glibc: Incorrect analysis of x86 CPU properties selects wrong string functions 1646373 - glibc: Crash in getaddrinfo_a when thread creation fails 1647490 - glibc: stdlib/test-bz22786 test suite failure on s390x [rhel-7.7] 1661508 - glibc: Adjust to rpm's find-debuginfo.sh changes, to keep stripping binaries [rhel-7.7] 1662842 - glibc: realloc ncopies integer overflow [rhel-7] 1684874 - glibc: Add more Linux definitions to , including IP*_PMTUDISC_OMIT