Executive Summary
Summary | |
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Title | glibc security and bug fix update |
Informations | |||
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Name | RHSA-2016:0176 | First vendor Publication | 2016-02-16 |
Vendor | RedHat | Last vendor Modification | 2016-02-16 |
Severity (Vendor) | N/A | Revision | 01 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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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) | |||
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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 two security issues and two bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Critical 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, 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 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. A stack-based buffer overflow was found in the way the libresolv library performed dual A/AAAA DNS queries. A remote attacker could create a specially crafted DNS response which could cause libresolv to crash or, potentially, execute code with the permissions of the user running the library. Note: this issue is only exposed when libresolv is called from the nss_dns NSS service module. (CVE-2015-7547) It was discovered that the calloc implementation in glibc could return memory areas which contain non-zero bytes. This could result in unexpected application behavior such as hangs or crashes. (CVE-2015-5229) The CVE-2015-7547 issue was discovered by the Google Security Team and Red Hat. Red Hat would like to thank Jeff Layton for reporting the CVE-2015-5229 issue. This update also fixes the following bugs: * The existing implementation of the "free" function causes all memory pools beyond the first to return freed memory directly to the operating system as quickly as possible. This can result in performance degradation when the rate of free calls is very high. The first memory pool (the main pool) does provide a method to rate limit the returns via M_TRIM_THRESHOLD, but this method is not available to subsequent memory pools. With this update, the M_TRIM_THRESHOLD method is extended to apply to all memory pools, which improves performance for threads with very high amounts of free calls and limits the number of "madvise" system calls. The change also increases the total transient memory usage by processes because the trim threshold must be reached before memory can be freed. To return to the previous behavior, you can either set M_TRIM_THRESHOLD using the "mallopt" function, or set the MALLOC_TRIM_THRESHOLD environment variable to 0. (BZ#1298930) * On the little-endian variant of 64-bit IBM Power Systems (ppc64le), a bug in the dynamic loader could cause applications compiled with profiling enabled to fail to start with the error "monstartup: out of memory". The bug has been corrected and applications compiled for profiling now start correctly. (BZ#1298956) All glibc users are advised to upgrade to these updated packages, which contain backported patches to correct 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/): 1256285 - CVE-2015-5229 glibc: calloc may return non-zero memory 1293532 - CVE-2015-7547 glibc: getaddrinfo stack-based buffer overflow 1298956 - "monstartup: out of memory" on PPC64LE [rhel-7.2.z] |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2016-0176.html |
CWE : Common Weakness Enumeration
% | Id | Name |
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50 % | CWE-119 | Failure to Constrain Operations within the Bounds of a Memory Buffer |
50 % | CWE-17 | Code |
CPE : Common Platform Enumeration
Snort® IPS/IDS
Date | Description |
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2016-03-14 | glibc getaddrinfo AAAA record stack buffer overflow attempt RuleID : 37731-community - Revision : 5 - Type : PROTOCOL-DNS |
2016-03-22 | glibc getaddrinfo AAAA record stack buffer overflow attempt RuleID : 37731 - Revision : 5 - Type : PROTOCOL-DNS |
2016-03-14 | glibc getaddrinfo A record stack buffer overflow attempt RuleID : 37730-community - Revision : 5 - Type : PROTOCOL-DNS |
2016-03-22 | glibc getaddrinfo A record stack buffer overflow attempt RuleID : 37730 - Revision : 5 - Type : PROTOCOL-DNS |
Nessus® Vulnerability Scanner
Date | Description |
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2018-02-28 | Name : The version of Arista Networks EOS running on the remote device is affected b... File : arista_eos_sa0017.nasl - Type : ACT_GATHER_INFO |
2017-03-30 | Name : The remote OracleVM host is missing one or more security updates. File : oraclevm_OVMSA-2017-0051.nasl - Type : ACT_GATHER_INFO |
2016-09-14 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-CSCuy36553-nxos.nasl - Type : ACT_GATHER_INFO |
2016-03-11 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2016-660.nasl - Type : ACT_GATHER_INFO |
2016-03-04 | Name : The remote Fedora host is missing a security update. File : fedora_2016-0f9e9a34ce.nasl - Type : ACT_GATHER_INFO |
2016-03-04 | Name : The remote Fedora host is missing a security update. File : fedora_2016-0480defc94.nasl - Type : ACT_GATHER_INFO |
2016-02-25 | Name : The remote VMware ESXi host is missing a security-related patch. File : vmware_VMSA-2016-0002.nasl - Type : ACT_GATHER_INFO |
2016-02-24 | Name : The remote Slackware host is missing a security update. File : Slackware_SSA_2016-054-02.nasl - Type : ACT_GATHER_INFO |
2016-02-23 | Name : The remote VMware ESXi host is affected by a remote code execution vulnerabil... File : vmware_VMSA-2016-0002_remote.nasl - Type : ACT_GATHER_INFO |
2016-02-23 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2016-0277.nasl - Type : ACT_GATHER_INFO |
2016-02-22 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2016-234.nasl - Type : ACT_GATHER_INFO |
2016-02-19 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2016-233.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 |
2016-02-18 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-0472-1.nasl - Type : ACT_GATHER_INFO |
2016-02-18 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-0471-1.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 openSUSE host is missing a security update. File : openSUSE-2016-224.nasl - Type : ACT_GATHER_INFO |
2016-02-18 | Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_2dd7e97ed5e811e5bcbdbc5ff45d0f28.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2016-0175.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2016-653.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2016-0176.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Debian host is missing a security update. File : debian_DLA-416.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 |
2016-02-17 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-3481.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote device is missing a vendor-supplied security patch. File : f5_bigip_SOL47098834.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2016-0175.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2016-0176.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 Red Hat host is missing one or more security updates. File : redhat-RHSA-2016-0175.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2016-0176.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2016-0225.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20160216_glibc_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20160216_glibc_on_SL7_x.nasl - Type : ACT_GATHER_INFO |
2016-02-17 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-2900-1.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2016-04-08 21:28:45 |
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2016-02-29 21:30:00 |
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2016-02-25 09:28:55 |
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2016-02-19 21:28:59 |
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2016-02-19 05:30:11 |
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2016-02-18 13:27:47 |
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2016-02-16 21:29:38 |
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2016-02-16 21:24:41 |
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