Sigurnosni nedostaci programske biblioteke glibc

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by - 30. listopada 2018.0

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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: glibc security, bug fix, and enhancement update
Advisory ID: RHSA-2018:3092-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:3092
Issue date: 2018-10-30
CVE Names: CVE-2017-16997 CVE-2018-6485 CVE-2018-11236
CVE-2018-11237
=====================================================================

1. Summary:

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
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) – aarch64, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) – aarch64, ppc64le, s390x

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: Incorrect handling of RPATH in elf/dl-load.c can be used to
execute code loaded from arbitrary libraries (CVE-2017-16997)

* glibc: Integer overflow in posix_memalign in memalign functions
(CVE-2018-6485)

* glibc: Integer overflow in stdlib/canonicalize.c on 32-bit architectures
leading to stack-based buffer overflow (CVE-2018-11236)

* glibc: Buffer overflow in __mempcpy_avx512_no_vzeroupper (CVE-2018-11237)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.6 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/):

1349967 – Fix warning: “IN_MODULE” redefined [enabled by default]
1349982 – Fix static analysis warnings in build-locale-archive.c.
1372304 – glibc: backport build/testing time improvements
1401665 – Fix process shared robust mutex defects.
1408964 – RFE: Add Provides: nss_db to the glibc rpm
1448107 – glibc: Add el_GR@euro, ur_IN, and wal_ET locales
1461231 – [RFE] Support OFD locking constants, but disable them for 32-bit offsets (not following upstream) (glibc)
1471405 – glibc: Define O_TMPFILE macro
1476120 – glibc headers don’t include linux/falloc.h, and therefore doesn’t include fallocate() flags
1505451 – pthread_barrier_init typo has in-theory-undefined behavior
1505477 – strftime_l: Fix multiline macro DO_NUMBER (GCC 8 warnings, and coverity warnings)
1505492 – glibc: Build with -Werror and -Wundef
1505500 – locale: Transliteration function may return address of local variable.
1505647 – NSCD not properly caching netgroup
1526865 – CVE-2017-16997 glibc: Incorrect handling of RPATH in elf/dl-load.c can be used to execute code loaded from arbitrary libraries
1531168 – glibc: setcontext/makecontext alignment issues on x86
1542102 – CVE-2018-6485 glibc: Integer overflow in posix_memalign in memalign functions
1560641 – sem_open – valgrind complains about uninitialised bytes
1563046 – getlogin_r: return early when linux sentinel value is set
1563747 – glibc: Adjust system call name list to Linux 4.16+
1564638 – glibc: Fix compile-time type error in string/test-strncmp.c and other string tests
1566623 – glibc: Old-style function definitions without prototype in libio/strops.c
1579727 – glibc: Crash in __res_context_send after memory allocation failure
1581269 – CVE-2018-11236 glibc: Integer overflow in stdlib/canonicalize.c on 32-bit architectures leading to stack-based buffer overflow
1581274 – CVE-2018-11237 glibc: Buffer overflow in __mempcpy_avx512_no_vzeroupper

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
glibc-2.17-260.el7.src.rpm

x86_64:
glibc-2.17-260.el7.i686.rpm
glibc-2.17-260.el7.x86_64.rpm
glibc-common-2.17-260.el7.x86_64.rpm
glibc-debuginfo-2.17-260.el7.i686.rpm
glibc-debuginfo-2.17-260.el7.x86_64.rpm
glibc-debuginfo-common-2.17-260.el7.i686.rpm
glibc-debuginfo-common-2.17-260.el7.x86_64.rpm
glibc-devel-2.17-260.el7.i686.rpm
glibc-devel-2.17-260.el7.x86_64.rpm
glibc-headers-2.17-260.el7.x86_64.rpm
glibc-utils-2.17-260.el7.x86_64.rpm
nscd-2.17-260.el7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
glibc-debuginfo-2.17-260.el7.i686.rpm
glibc-debuginfo-2.17-260.el7.x86_64.rpm
glibc-debuginfo-common-2.17-260.el7.i686.rpm
glibc-debuginfo-common-2.17-260.el7.x86_64.rpm
glibc-static-2.17-260.el7.i686.rpm
glibc-static-2.17-260.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
glibc-2.17-260.el7.src.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

Red Hat Enterprise Linux Server (v. 7):

Source:
glibc-2.17-260.el7.src.rpm

ppc64:
glibc-2.17-260.el7.ppc.rpm
glibc-2.17-260.el7.ppc64.rpm
glibc-common-2.17-260.el7.ppc64.rpm
glibc-debuginfo-2.17-260.el7.ppc.rpm
glibc-debuginfo-2.17-260.el7.ppc64.rpm
glibc-debuginfo-common-2.17-260.el7.ppc.rpm
glibc-debuginfo-common-2.17-260.el7.ppc64.rpm
glibc-devel-2.17-260.el7.ppc.rpm
glibc-devel-2.17-260.el7.ppc64.rpm
glibc-headers-2.17-260.el7.ppc64.rpm
glibc-utils-2.17-260.el7.ppc64.rpm
nscd-2.17-260.el7.ppc64.rpm

ppc64le:
glibc-2.17-260.el7.ppc64le.rpm
glibc-common-2.17-260.el7.ppc64le.rpm
glibc-debuginfo-2.17-260.el7.ppc64le.rpm
glibc-debuginfo-common-2.17-260.el7.ppc64le.rpm
glibc-devel-2.17-260.el7.ppc64le.rpm
glibc-headers-2.17-260.el7.ppc64le.rpm
glibc-utils-2.17-260.el7.ppc64le.rpm
nscd-2.17-260.el7.ppc64le.rpm

s390x:
glibc-2.17-260.el7.s390.rpm
glibc-2.17-260.el7.s390x.rpm
glibc-common-2.17-260.el7.s390x.rpm
glibc-debuginfo-2.17-260.el7.s390.rpm
glibc-debuginfo-2.17-260.el7.s390x.rpm
glibc-debuginfo-common-2.17-260.el7.s390.rpm
glibc-debuginfo-common-2.17-260.el7.s390x.rpm
glibc-devel-2.17-260.el7.s390.rpm
glibc-devel-2.17-260.el7.s390x.rpm
glibc-headers-2.17-260.el7.s390x.rpm
glibc-utils-2.17-260.el7.s390x.rpm
nscd-2.17-260.el7.s390x.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):

Source:
glibc-2.17-260.el7.src.rpm

aarch64:
glibc-2.17-260.el7.aarch64.rpm
glibc-common-2.17-260.el7.aarch64.rpm
glibc-debuginfo-2.17-260.el7.aarch64.rpm
glibc-devel-2.17-260.el7.aarch64.rpm
glibc-headers-2.17-260.el7.aarch64.rpm
glibc-utils-2.17-260.el7.aarch64.rpm
nscd-2.17-260.el7.aarch64.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):

aarch64:
glibc-debuginfo-2.17-260.el7.aarch64.rpm
glibc-static-2.17-260.el7.aarch64.rpm

ppc64le:
glibc-debuginfo-2.17-260.el7.ppc64le.rpm
glibc-debuginfo-common-2.17-260.el7.ppc64le.rpm
glibc-static-2.17-260.el7.ppc64le.rpm

s390x:
glibc-debuginfo-2.17-260.el7.s390.rpm
glibc-debuginfo-2.17-260.el7.s390x.rpm
glibc-debuginfo-common-2.17-260.el7.s390.rpm
glibc-debuginfo-common-2.17-260.el7.s390x.rpm
glibc-static-2.17-260.el7.s390.rpm
glibc-static-2.17-260.el7.s390x.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
glibc-debuginfo-2.17-260.el7.ppc.rpm
glibc-debuginfo-2.17-260.el7.ppc64.rpm
glibc-debuginfo-common-2.17-260.el7.ppc.rpm
glibc-debuginfo-common-2.17-260.el7.ppc64.rpm
glibc-static-2.17-260.el7.ppc.rpm
glibc-static-2.17-260.el7.ppc64.rpm

ppc64le:
glibc-debuginfo-2.17-260.el7.ppc64le.rpm
glibc-debuginfo-common-2.17-260.el7.ppc64le.rpm
glibc-static-2.17-260.el7.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
glibc-2.17-260.el7.src.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

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-2017-16997
https://access.redhat.com/security/cve/CVE-2018-6485
https://access.redhat.com/security/cve/CVE-2018-11236
https://access.redhat.com/security/cve/CVE-2018-11237
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.6_release_notes/index

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

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