Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title glibc security and bug fix update
Informations
Name RHSA-2012:1098 First vendor Publication 2012-07-18
Vendor RedHat Last vendor Modification 2012-07-18
Severity (Vendor) Moderate Revision 01

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:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated glibc packages that fix three security issues and one bug are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team 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 Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

The glibc packages provide the standard C and standard math libraries used by multiple programs on the system. Without these libraries, the Linux system cannot function properly.

Multiple errors in glibc's formatted printing functionality could allow an attacker to bypass FORTIFY_SOURCE protections and execute arbitrary code using a format string flaw in an application, even though these protections are expected to limit the impact of such flaws to an application abort. (CVE-2012-3404, CVE-2012-3405, CVE-2012-3406)

This update also fixes the following bug:

* A programming error caused an internal array of nameservers to be only partially initialized when the /etc/resolv.conf file contained IPv6 nameservers. Depending on the contents of a nearby structure, this could cause certain applications to terminate unexpectedly with a segmentation fault. The programming error has been fixed, which restores proper behavior with IPv6 nameservers listed in the /etc/resolv.conf file. (BZ#837026)

All users of glibc are advised to upgrade to these updated packages, which contain backported patches to fix these issues.

4. Solution:

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

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

826943 - CVE-2012-3406 glibc: printf() unbound alloca() usage in case of positional parameters + many format specs 833703 - CVE-2012-3404 glibc: incorrect size calculation in formatted printing can lead to FORTIFY_SOURCE format string protection bypass 833704 - CVE-2012-3405 glibc: incorrect use of extend_alloca() in formatted printing can lead to FORTIFY_SOURCE format string protection bypass 837026 - libresolv dumps core when IPv6 address in resolv.conf

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2012-1098.html

CWE : Common Weakness Enumeration

% Id Name
67 % CWE-189 Numeric Errors (CWE/SANS Top 25)
33 % CWE-264 Permissions, Privileges, and Access Controls

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:21252
 
Oval ID: oval:org.mitre.oval:def:21252
Title: RHSA-2012:1098: glibc security and bug fix update (Moderate)
Description: The vfprintf function in stdio-common/vfprintf.c in GNU C Library (aka glibc) 2.5, 2.12, and probably other versions does not "properly restrict the use of" the alloca function when allocating the SPECS array, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (crash) or possibly execute arbitrary code via a crafted format string using positional parameters and a large number of format specifiers, a different vulnerability than CVE-2012-3404 and CVE-2012-3405.
Family: unix Class: patch
Reference(s): RHSA-2012:1098-01
CESA-2012:1098
CVE-2012-3404
CVE-2012-3405
CVE-2012-3406
Version: 28
Platform(s): Red Hat Enterprise Linux 6
CentOS Linux 6
Product(s): glibc
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21515
 
Oval ID: oval:org.mitre.oval:def:21515
Title: RHSA-2012:1097: glibc security and bug fix update (Moderate)
Description: The vfprintf function in stdio-common/vfprintf.c in GNU C Library (aka glibc) 2.5, 2.12, and probably other versions does not "properly restrict the use of" the alloca function when allocating the SPECS array, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (crash) or possibly execute arbitrary code via a crafted format string using positional parameters and a large number of format specifiers, a different vulnerability than CVE-2012-3404 and CVE-2012-3405.
Family: unix Class: patch
Reference(s): RHSA-2012:1097-00
CESA-2012:1097
CVE-2012-3406
Version: 5
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Product(s): glibc
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22825
 
Oval ID: oval:org.mitre.oval:def:22825
Title: ELSA-2012:1097: glibc security and bug fix update (Moderate)
Description: The vfprintf function in stdio-common/vfprintf.c in GNU C Library (aka glibc) 2.5, 2.12, and probably other versions does not "properly restrict the use of" the alloca function when allocating the SPECS array, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (crash) or possibly execute arbitrary code via a crafted format string using positional parameters and a large number of format specifiers, a different vulnerability than CVE-2012-3404 and CVE-2012-3405.
Family: unix Class: patch
Reference(s): ELSA-2012:1097-00
CVE-2012-3406
Version: 6
Platform(s): Oracle Linux 5
Product(s): glibc
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23014
 
Oval ID: oval:org.mitre.oval:def:23014
Title: ELSA-2012:1098: glibc security and bug fix update (Moderate)
Description: The vfprintf function in stdio-common/vfprintf.c in GNU C Library (aka glibc) 2.5, 2.12, and probably other versions does not "properly restrict the use of" the alloca function when allocating the SPECS array, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (crash) or possibly execute arbitrary code via a crafted format string using positional parameters and a large number of format specifiers, a different vulnerability than CVE-2012-3404 and CVE-2012-3405.
Family: unix Class: patch
Reference(s): ELSA-2012:1098-01
CVE-2012-3404
CVE-2012-3405
CVE-2012-3406
Version: 17
Platform(s): Oracle Linux 6
Product(s): glibc
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27827
 
Oval ID: oval:org.mitre.oval:def:27827
Title: DEPRECATED: ELSA-2012-1098 -- glibc security and bug fix update (moderate)
Description: [2.12-1.80.el6_3.3] - Fix incorrect/corrupt patchfile for 833716. Did not affect generated code, but tests were missing (#833716). [2.12-1.80.el6_3.2] - Fix regression after patch for BZ804630 (#837026). [2.12-1.80.el6_3.1] - Fixes an unbound alloca and related problems. (#833716)
Family: unix Class: patch
Reference(s): ELSA-2012-1098
CVE-2012-3404
CVE-2012-3405
CVE-2012-3406
Version: 4
Platform(s): Oracle Linux 6
Product(s): glibc
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27845
 
Oval ID: oval:org.mitre.oval:def:27845
Title: DEPRECATED: ELSA-2012-1097 -- glibc security and bug fix update (moderate)
Description: [2.5-81.el5_8.4] - Fix iconv() segfault if the invalid multibyte character 0xffff is input when converting from IBM930 (#837896) [2.5-81.el5_8.3] - Fix unbound alloca in vfprintf (#833720)
Family: unix Class: patch
Reference(s): ELSA-2012-1097
CVE-2012-3406
Version: 4
Platform(s): Oracle Linux 5
Product(s): glibc
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 3
Application 1
Os 5
Os 2

OpenVAS Exploits

Date Description
2012-12-27 Name : VMSA-2012-0018: VMware security updates for vCSA and ESXi
File : nvt/gb_VMSA-2012-0018.nasl
2012-12-18 Name : Ubuntu Update for glibc USN-1589-2
File : nvt/gb_ubuntu_USN_1589_2.nasl
2012-10-03 Name : Ubuntu Update for eglibc USN-1589-1
File : nvt/gb_ubuntu_USN_1589_1.nasl
2012-08-30 Name : Fedora Update for glibc FEDORA-2012-11508
File : nvt/gb_fedora_2012_11508_glibc_fc17.nasl
2012-07-30 Name : CentOS Update for glibc CESA-2012:1097 centos5
File : nvt/gb_CESA-2012_1097_glibc_centos5.nasl
2012-07-30 Name : CentOS Update for glibc CESA-2012:1098 centos6
File : nvt/gb_CESA-2012_1098_glibc_centos6.nasl
2012-07-19 Name : RedHat Update for glibc RHSA-2012:1097-01
File : nvt/gb_RHSA-2012_1097-01_glibc.nasl
2012-07-19 Name : RedHat Update for glibc RHSA-2012:1098-01
File : nvt/gb_RHSA-2012_1098-01_glibc.nasl

Information Assurance Vulnerability Management (IAVM)

Date Description
2015-02-12 IAVM : 2015-A-0038 - Multiple Vulnerabilities in GNU C Library (glibc)
Severity : Category I - VMSKEY : V0058753

Nessus® Vulnerability Scanner

Date Description
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2013-1251-1.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2012-1488-1.nasl - Type : ACT_GATHER_INFO
2015-04-06 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL16364.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 Debian host is missing a security update.
File : debian_DLA-165.nasl - Type : ACT_GATHER_INFO
2015-03-09 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201503-04.nasl - Type : ACT_GATHER_INFO
2015-02-24 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3169.nasl - Type : ACT_GATHER_INFO
2014-11-08 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2012-1200.nasl - Type : ACT_GATHER_INFO
2014-11-08 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2012-1185.nasl - Type : ACT_GATHER_INFO
2013-11-13 Name : The remote VMware ESXi 5.0 host is affected by multiple vulnerabilities.
File : vmware_esxi_5_0_build_912577_remote.nasl - Type : ACT_GATHER_INFO
2013-11-13 Name : The remote VMware ESXi 5.1 host is affected by multiple security vulnerabilit...
File : vmware_esxi_5_1_build_1063671_remote.nasl - Type : ACT_GATHER_INFO
2013-09-04 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2012-109.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2012-1098.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2012-1097.nasl - Type : ACT_GATHER_INFO
2013-01-25 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_glibc-121129.nasl - Type : ACT_GATHER_INFO
2012-12-24 Name : The remote VMware ESXi host is missing one or more security-related patches.
File : vmware_VMSA-2012-0018.nasl - Type : ACT_GATHER_INFO
2012-12-18 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1589-2.nasl - Type : ACT_GATHER_INFO
2012-11-19 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_glibc-8351.nasl - Type : ACT_GATHER_INFO
2012-10-02 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1589-1.nasl - Type : ACT_GATHER_INFO
2012-08-16 Name : The remote Fedora host is missing a security update.
File : fedora_2012-11508.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20120718_glibc_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20120718_glibc_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2012-07-20 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2012-1098.nasl - Type : ACT_GATHER_INFO
2012-07-19 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2012-1098.nasl - Type : ACT_GATHER_INFO
2012-07-19 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2012-1097.nasl - Type : ACT_GATHER_INFO
2012-07-19 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2012-1097.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
Date Informations
2014-02-17 11:56:10
  • Multiple Updates
2014-02-11 13:24:50
  • Multiple Updates
2014-02-10 21:28:14
  • Multiple Updates