Executive Summary

Summary
Title glibc security and bug fix update
Informations
Name RHSA-2015:0327 First vendor Publication 2015-03-05
Vendor RedHat Last vendor Modification 2015-03-05
Severity (Vendor) Moderate Revision 02

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

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

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2015-0327.html

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer
50 % CWE-17 Code

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 117
Os 3
Os 1
Os 2
Os 2

Nessus® Vulnerability Scanner

Date Description
2016-05-27 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2985-2.nasl - Type : ACT_GATHER_INFO
2016-05-26 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-2985-1.nasl - Type : ACT_GATHER_INFO
2016-02-18 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-0470-1.nasl - Type : ACT_GATHER_INFO
2016-02-18 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201602-02.nasl - Type : ACT_GATHER_INFO
2016-02-17 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2016-0013.nasl - Type : ACT_GATHER_INFO
2016-02-17 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3480.nasl - Type : ACT_GATHER_INFO
2015-11-02 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-1844-1.nasl - Type : ACT_GATHER_INFO
2015-09-28 Name : The remote Debian host is missing a security update.
File : debian_DLA-316.nasl - Type : ACT_GATHER_INFO
2015-09-17 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL16435.nasl - Type : ACT_GATHER_INFO
2015-08-25 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-1424-1.nasl - Type : ACT_GATHER_INFO
2015-05-28 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2015-383.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-0170-1.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-0167-1.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-0164-1.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2014-1129-1.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2014-1128-1.nasl - Type : ACT_GATHER_INFO
2015-03-30 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2015-168.nasl - Type : ACT_GATHER_INFO
2015-03-26 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20150305_glibc_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2015-03-26 Name : The remote Debian host is missing a security update.
File : debian_DLA-97.nasl - Type : ACT_GATHER_INFO
2015-03-25 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2015-495.nasl - Type : ACT_GATHER_INFO
2015-03-18 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0327.nasl - Type : ACT_GATHER_INFO
2015-03-10 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0327.nasl - Type : ACT_GATHER_INFO
2015-03-05 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0327.nasl - Type : ACT_GATHER_INFO
2015-03-05 Name : The remote Fedora host is missing a security update.
File : fedora_2015-2845.nasl - Type : ACT_GATHER_INFO
2015-02-11 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_glibc-150129.nasl - Type : ACT_GATHER_INFO
2015-01-28 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3142.nasl - Type : ACT_GATHER_INFO
2015-01-09 Name : The remote OracleVM host is missing one or more security updates.
File : oraclevm_OVMSA-2015-0003.nasl - Type : ACT_GATHER_INFO
2015-01-09 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2015-468.nasl - Type : ACT_GATHER_INFO
2015-01-08 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20150107_glibc_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2015-01-08 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0016.nasl - Type : ACT_GATHER_INFO
2015-01-08 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-0016.nasl - Type : ACT_GATHER_INFO
2015-01-08 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-0016.nasl - Type : ACT_GATHER_INFO
2014-12-04 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2432-1.nasl - Type : ACT_GATHER_INFO
2014-10-24 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2014-296-01.nasl - Type : ACT_GATHER_INFO
2014-09-12 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2014-175.nasl - Type : ACT_GATHER_INFO
2014-09-12 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2014-536.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
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Date Informations
2015-12-05 13:27:49
  • Multiple Updates
2015-03-27 21:30:31
  • Multiple Updates
2015-03-19 13:28:27
  • Multiple Updates
2015-03-06 13:26:04
  • Multiple Updates
2015-03-05 21:22:39
  • First insertion