Issued:
2018-04-10
Updated:
2018-04-10

RHSA-2018:0805 - Moderate: glibc security, bug fix, and enhancement update

Synopsis

Moderate: glibc security, bug fix, and enhancement update

Type/Severity

Security Advisory Moderate

Topic

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.

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: realpath() buffer underflow when getcwd() returns relative path allows privilege escalation (CVE-2018-1000001)

  • glibc: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)

  • glibc: Buffer overflow during unescaping of user names with the ~ operator (CVE-2017-15804)

  • glibc: denial of service in getnetbyname function (CVE-2014-9402)

  • glibc: DNS resolver NULL pointer dereference with crafted record type (CVE-2015-5180)

  • glibc: Fragmentation attacks possible when EDNS0 is enabled (CVE-2017-12132)

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

Red Hat would like to thank halfdog for reporting CVE-2018-1000001. The CVE-2015-5180 issue was discovered by Florian Weimer (Red Hat Product Security).

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section.

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.

Affected Products

ProductVersionArch
Red Hat Virtualization Host4x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions7.7x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions7.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support7.7x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support7.6x86_64
Red Hat Enterprise Linux for Scientific Computing7x86_64
Red Hat Enterprise Linux for Power, little endian7ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support7.7ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support7.6ppc64le
Red Hat Enterprise Linux for Power, big endian7ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support7.7ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support7.6ppc64
Red Hat Enterprise Linux for Power 97ppc64le
Red Hat Enterprise Linux for IBM z Systems7s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support7.7s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support7.6s390x
Red Hat Enterprise Linux for IBM System z (Structure A)7s390x
Red Hat Enterprise Linux for ARM 647aarch64
Red Hat Enterprise Linux Workstation7x86_64
Red Hat Enterprise Linux Server7x86_64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions7.7ppc64le
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions7.6ppc64le
Red Hat Enterprise Linux Server - TUS7.7x86_64
Red Hat Enterprise Linux Server - TUS7.6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support7x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian7ppc64le
Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian7ppc64
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)7s390x
Red Hat Enterprise Linux Server - AUS7.7x86_64
Red Hat Enterprise Linux Server - AUS7.6x86_64
Red Hat Enterprise Linux EUS Compute Node7.7x86_64
Red Hat Enterprise Linux EUS Compute Node7.6x86_64
Red Hat Enterprise Linux Desktop7x86_64

Updated Packages

  • glibc-static-2.17-222.el7.x86_64.rpm
  • glibc-static-2.17-222.el7.s390.rpm
  • glibc-devel-2.17-222.el7.x86_64.rpm
  • glibc-2.17-222.el7.i686.rpm
  • glibc-utils-2.17-222.el7.x86_64.rpm
  • glibc-debuginfo-2.17-222.el7.x86_64.rpm
  • glibc-common-2.17-222.el7.ppc64le.rpm
  • glibc-static-2.17-222.el7.i686.rpm
  • glibc-devel-2.17-222.el7.i686.rpm
  • nscd-2.17-222.el7.s390x.rpm
  • glibc-debuginfo-2.17-222.el7.s390x.rpm
  • glibc-utils-2.17-222.el7.aarch64.rpm
  • glibc-headers-2.17-222.el7.aarch64.rpm
  • nscd-2.17-222.el7.ppc64le.rpm
  • glibc-2.17-222.el7.s390.rpm
  • glibc-devel-2.17-222.el7.s390.rpm
  • glibc-headers-2.17-222.el7.x86_64.rpm
  • glibc-2.17-222.el7.ppc64le.rpm
  • glibc-2.17-222.el7.ppc.rpm
  • glibc-2.17-222.el7.ppc64.rpm
  • glibc-debuginfo-common-2.17-222.el7.ppc64le.rpm
  • glibc-headers-2.17-222.el7.s390x.rpm
  • glibc-2.17-222.el7.src.rpm
  • glibc-debuginfo-common-2.17-222.el7.ppc.rpm
  • glibc-utils-2.17-222.el7.ppc64le.rpm
  • glibc-headers-2.17-222.el7.ppc64le.rpm
  • glibc-debuginfo-2.17-222.el7.ppc.rpm
  • glibc-debuginfo-2.17-222.el7.i686.rpm
  • glibc-static-2.17-222.el7.s390x.rpm
  • nscd-2.17-222.el7.ppc64.rpm
  • glibc-static-2.17-222.el7.ppc64.rpm
  • glibc-static-2.17-222.el7.ppc64le.rpm
  • glibc-static-2.17-222.el7.ppc.rpm
  • glibc-common-2.17-222.el7.aarch64.rpm
  • glibc-devel-2.17-222.el7.ppc64le.rpm
  • glibc-debuginfo-common-2.17-222.el7.s390x.rpm
  • glibc-debuginfo-2.17-222.el7.aarch64.rpm
  • glibc-utils-2.17-222.el7.s390x.rpm
  • glibc-common-2.17-222.el7.s390x.rpm
  • glibc-debuginfo-common-2.17-222.el7.i686.rpm
  • glibc-debuginfo-2.17-222.el7.s390.rpm
  • glibc-devel-2.17-222.el7.aarch64.rpm
  • glibc-debuginfo-common-2.17-222.el7.s390.rpm
  • glibc-2.17-222.el7.x86_64.rpm
  • glibc-devel-2.17-222.el7.ppc64.rpm
  • nscd-2.17-222.el7.aarch64.rpm
  • glibc-common-2.17-222.el7.ppc64.rpm
  • glibc-debuginfo-2.17-222.el7.ppc64le.rpm
  • nscd-2.17-222.el7.x86_64.rpm
  • glibc-2.17-222.el7.aarch64.rpm
  • glibc-2.17-222.el7.s390x.rpm
  • glibc-debuginfo-common-2.17-222.el7.x86_64.rpm
  • glibc-headers-2.17-222.el7.ppc64.rpm
  • glibc-static-2.17-222.el7.aarch64.rpm
  • glibc-debuginfo-common-2.17-222.el7.ppc64.rpm
  • glibc-debuginfo-2.17-222.el7.ppc64.rpm
  • glibc-devel-2.17-222.el7.ppc.rpm
  • glibc-devel-2.17-222.el7.s390x.rpm
  • glibc-utils-2.17-222.el7.ppc64.rpm
  • glibc-common-2.17-222.el7.x86_64.rpm

Fixes

CVEs

References

Additional information