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[RHSA-2015:2199-07] Moderate: glibc security, bug fix, and enhancement update

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Red Hat Security Advisory

 

Synopsis: Moderate: glibc security, bug fix, and enhancement update

Advisory ID: RHSA-2015:2199-07

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-2199.html

Issue date: 2015-11-19

CVE Names: CVE-2013-7423 CVE-2015-1472 CVE-2015-1473

CVE-2015-1781

=====================================================================

 

1. Summary:

 

Updated glibc packages that fix multiple security issues, several bugs, and

add one enhancement 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) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, 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 Server

Caching Daemon (nscd) used by multiple programs on the system.

Without these libraries, the Linux system cannot function correctly.

 

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)

 

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)

 

A heap-based buffer overflow flaw and a stack overflow flaw were found in

glibc's swscanf() function. An attacker able to make an application call

the swscanf() function could use these flaws to crash that application or,

potentially, execute arbitrary code with the permissions of the user

running the application. (CVE-2015-1472, CVE-2015-1473)

 

An integer overflow flaw, leading to a heap-based buffer overflow, was

found in glibc's _IO_wstr_overflow() function. An attacker able to make an

application call this function could use this flaw to crash that

application or, potentially, execute arbitrary code with the permissions of

the user running the application. (BZ#1195762)

 

A flaw was found in the way glibc's fnmatch() function processed certain

malformed patterns. An attacker able to make an application call this

function could use this flaw to crash that application. (BZ#1197730)

 

The CVE-2015-1781 issue was discovered by Arjun Shankar of Red Hat.

 

These updated glibc packages also include numerous bug fixes and one

enhancement. Space precludes documenting all of these changes in this

advisory. For information on the most significant of these changes, users

are directed to the following article on the Red Hat Customer Portal:

 

https://access.redhat.com/articles/2050743

 

All glibc users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues and add these

enhancements.

 

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/):

 

1064066 - Test suite failure: test-ldouble

1098042 - getaddrinfo return EAI_NONAME instead of EAI_AGAIN in case the DNS query times out

1144133 - calloc in dl-reloc.c computes size incorrectly

1187109 - CVE-2013-7423 glibc: getaddrinfo() writes DNS queries to random file descriptors under high load

1188235 - CVE-2015-1472 glibc: heap buffer overflow in glibc swscanf

1195762 - glibc: _IO_wstr_overflow integer overflow

1197730 - glibc: potential denial of service in internal_fnmatch()

1199525 - CVE-2015-1781 glibc: buffer overflow in gethostbyname_r() and related functions with misaligned buffer

1207032 - glibc deadlock when printing backtrace from memory allocator

1209105 - CVE-2015-1473 glibc: Stack-overflow in glibc swscanf

1219891 - Missing define for TCP_USER_TIMEOUT in netinet/tcp.h

1225490 - [RFE] Unconditionally enable SDT probes in glibc builds.

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

glibc-2.17-105.el7.src.rpm

 

x86_64:

glibc-2.17-105.el7.i686.rpm

glibc-2.17-105.el7.x86_64.rpm

glibc-common-2.17-105.el7.x86_64.rpm

glibc-debuginfo-2.17-105.el7.i686.rpm

glibc-debuginfo-2.17-105.el7.x86_64.rpm

glibc-debuginfo-common-2.17-105.el7.i686.rpm

glibc-debuginfo-common-2.17-105.el7.x86_64.rpm

glibc-devel-2.17-105.el7.i686.rpm

glibc-devel-2.17-105.el7.x86_64.rpm

glibc-headers-2.17-105.el7.x86_64.rpm

glibc-utils-2.17-105.el7.x86_64.rpm

nscd-2.17-105.el7.x86_64.rpm

 

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

 

x86_64:

glibc-debuginfo-2.17-105.el7.i686.rpm

glibc-debuginfo-2.17-105.el7.x86_64.rpm

glibc-debuginfo-common-2.17-105.el7.i686.rpm

glibc-debuginfo-common-2.17-105.el7.x86_64.rpm

glibc-static-2.17-105.el7.i686.rpm

glibc-static-2.17-105.el7.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

glibc-2.17-105.el7.src.rpm

 

x86_64:

glibc-2.17-105.el7.i686.rpm

glibc-2.17-105.el7.x86_64.rpm

glibc-common-2.17-105.el7.x86_64.rpm

glibc-debuginfo-2.17-105.el7.i686.rpm

glibc-debuginfo-2.17-105.el7.x86_64.rpm

glibc-debuginfo-common-2.17-105.el7.i686.rpm

glibc-debuginfo-common-2.17-105.el7.x86_64.rpm

glibc-devel-2.17-105.el7.i686.rpm

glibc-devel-2.17-105.el7.x86_64.rpm

glibc-headers-2.17-105.el7.x86_64.rpm

glibc-utils-2.17-105.el7.x86_64.rpm

nscd-2.17-105.el7.x86_64.rpm

 

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

 

x86_64:

glibc-debuginfo-2.17-105.el7.i686.rpm

glibc-debuginfo-2.17-105.el7.x86_64.rpm

glibc-debuginfo-common-2.17-105.el7.i686.rpm

glibc-debuginfo-common-2.17-105.el7.x86_64.rpm

glibc-static-2.17-105.el7.i686.rpm

glibc-static-2.17-105.el7.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

glibc-2.17-105.el7.src.rpm

 

aarch64:

glibc-2.17-105.el7.aarch64.rpm

glibc-common-2.17-105.el7.aarch64.rpm

glibc-debuginfo-2.17-105.el7.aarch64.rpm

glibc-devel-2.17-105.el7.aarch64.rpm

glibc-headers-2.17-105.el7.aarch64.rpm

glibc-utils-2.17-105.el7.aarch64.rpm

nscd-2.17-105.el7.aarch64.rpm

 

ppc64:

glibc-2.17-105.el7.ppc.rpm

glibc-2.17-105.el7.ppc64.rpm

glibc-common-2.17-105.el7.ppc64.rpm

glibc-debuginfo-2.17-105.el7.ppc.rpm

glibc-debuginfo-2.17-105.el7.ppc64.rpm

glibc-debuginfo-common-2.17-105.el7.ppc.rpm

glibc-debuginfo-common-2.17-105.el7.ppc64.rpm

glibc-devel-2.17-105.el7.ppc.rpm

glibc-devel-2.17-105.el7.ppc64.rpm

glibc-headers-2.17-105.el7.ppc64.rpm

glibc-utils-2.17-105.el7.ppc64.rpm

nscd-2.17-105.el7.ppc64.rpm

 

ppc64le:

glibc-2.17-105.el7.ppc64le.rpm

glibc-common-2.17-105.el7.ppc64le.rpm

glibc-debuginfo-2.17-105.el7.ppc64le.rpm

glibc-debuginfo-common-2.17-105.el7.ppc64le.rpm

glibc-devel-2.17-105.el7.ppc64le.rpm

glibc-headers-2.17-105.el7.ppc64le.rpm

glibc-utils-2.17-105.el7.ppc64le.rpm

nscd-2.17-105.el7.ppc64le.rpm

 

s390x:

glibc-2.17-105.el7.s390.rpm

glibc-2.17-105.el7.s390x.rpm

glibc-common-2.17-105.el7.s390x.rpm

glibc-debuginfo-2.17-105.el7.s390.rpm

glibc-debuginfo-2.17-105.el7.s390x.rpm

glibc-debuginfo-common-2.17-105.el7.s390.rpm

glibc-debuginfo-common-2.17-105.el7.s390x.rpm

glibc-devel-2.17-105.el7.s390.rpm

glibc-devel-2.17-105.el7.s390x.rpm

glibc-headers-2.17-105.el7.s390x.rpm

glibc-utils-2.17-105.el7.s390x.rpm

nscd-2.17-105.el7.s390x.rpm

 

x86_64:

glibc-2.17-105.el7.i686.rpm

glibc-2.17-105.el7.x86_64.rpm

glibc-common-2.17-105.el7.x86_64.rpm

glibc-debuginfo-2.17-105.el7.i686.rpm

glibc-debuginfo-2.17-105.el7.x86_64.rpm

glibc-debuginfo-common-2.17-105.el7.i686.rpm

glibc-debuginfo-common-2.17-105.el7.x86_64.rpm

glibc-devel-2.17-105.el7.i686.rpm

glibc-devel-2.17-105.el7.x86_64.rpm

glibc-headers-2.17-105.el7.x86_64.rpm

glibc-utils-2.17-105.el7.x86_64.rpm

nscd-2.17-105.el7.x86_64.rpm

 

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

 

aarch64:

glibc-debuginfo-2.17-105.el7.aarch64.rpm

glibc-static-2.17-105.el7.aarch64.rpm

 

ppc64:

glibc-debuginfo-2.17-105.el7.ppc.rpm

glibc-debuginfo-2.17-105.el7.ppc64.rpm

glibc-debuginfo-common-2.17-105.el7.ppc.rpm

glibc-debuginfo-common-2.17-105.el7.ppc64.rpm

glibc-static-2.17-105.el7.ppc.rpm

glibc-static-2.17-105.el7.ppc64.rpm

 

ppc64le:

glibc-debuginfo-2.17-105.el7.ppc64le.rpm

glibc-debuginfo-common-2.17-105.el7.ppc64le.rpm

glibc-static-2.17-105.el7.ppc64le.rpm

 

s390x:

glibc-debuginfo-2.17-105.el7.s390.rpm

glibc-debuginfo-2.17-105.el7.s390x.rpm

glibc-debuginfo-common-2.17-105.el7.s390.rpm

glibc-debuginfo-common-2.17-105.el7.s390x.rpm

glibc-static-2.17-105.el7.s390.rpm

glibc-static-2.17-105.el7.s390x.rpm

 

x86_64:

glibc-debuginfo-2.17-105.el7.i686.rpm

glibc-debuginfo-2.17-105.el7.x86_64.rpm

glibc-debuginfo-common-2.17-105.el7.i686.rpm

glibc-debuginfo-common-2.17-105.el7.x86_64.rpm

glibc-static-2.17-105.el7.i686.rpm

glibc-static-2.17-105.el7.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

glibc-2.17-105.el7.src.rpm

 

x86_64:

glibc-2.17-105.el7.i686.rpm

glibc-2.17-105.el7.x86_64.rpm

glibc-common-2.17-105.el7.x86_64.rpm

glibc-debuginfo-2.17-105.el7.i686.rpm

glibc-debuginfo-2.17-105.el7.x86_64.rpm

glibc-debuginfo-common-2.17-105.el7.i686.rpm

glibc-debuginfo-common-2.17-105.el7.x86_64.rpm

glibc-devel-2.17-105.el7.i686.rpm

glibc-devel-2.17-105.el7.x86_64.rpm

glibc-headers-2.17-105.el7.x86_64.rpm

glibc-utils-2.17-105.el7.x86_64.rpm

nscd-2.17-105.el7.x86_64.rpm

 

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

 

x86_64:

glibc-debuginfo-2.17-105.el7.i686.rpm

glibc-debuginfo-2.17-105.el7.x86_64.rpm

glibc-debuginfo-common-2.17-105.el7.i686.rpm

glibc-debuginfo-common-2.17-105.el7.x86_64.rpm

glibc-static-2.17-105.el7.i686.rpm

glibc-static-2.17-105.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-2013-7423

https://access.redhat.com/security/cve/CVE-2015-1472

https://access.redhat.com/security/cve/CVE-2015-1473

https://access.redhat.com/security/cve/CVE-2015-1781

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/articles/2050743

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2015 Red Hat, Inc.

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