Executive Summary
Summary | |
---|---|
Title | libvirt security and bug fix update |
Informations | |||
---|---|---|---|
Name | RHSA-2014:0560 | First vendor Publication | 2014-05-27 |
Vendor | RedHat | Last vendor Modification | 2014-05-27 |
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:L/AC:M/Au:N/C:N/I:N/A:P) | |||
---|---|---|---|
Cvss Base Score | 1.9 | Attack Range | Local |
Cvss Impact Score | 2.9 | Attack Complexity | Medium |
Cvss Expoit Score | 3.4 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: Updated libvirt packages that fix one security issue and three bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link 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) - x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - x86_64 3. Description: The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. It was found that libvirt passes the XML_PARSE_NOENT flag when parsing XML documents using the libxml2 library, in which case all XML entities in the parsed documents are expanded. A user able to force libvirtd to parse an XML document with an entity pointing to a special file that blocks on read access could use this flaw to cause libvirtd to hang indefinitely, resulting in a denial of service on the system. (CVE-2014-0179) Red Hat would like to thank the upstream Libvirt project for reporting this issue. Upstream acknowledges Daniel P. Berrange and Richard Jones as the original reporters. This update also fixes the following bugs: * When hot unplugging a virtual CPU (vCPU), libvirt kept a pointer to already freed memory if the vCPU was pinned to a host CPU. Consequently, when reading the CPU pinning information, libvirt terminated unexpectedly due to an attempt to access this memory. This update ensures that libvirt releases the pointer to the previously allocated memory when a vCPU is being hot unplugged, and it no longer crashes in this situation. (BZ#1091206) * Previously, libvirt passed an incorrect argument to the "tc" command when setting quality of service (QoS) on a network interface controller (NIC). As a consequence, QoS was applied only to IP traffic. With this update, libvirt constructs the "tc" command correctly so that QoS is applied to all traffic as expected. (BZ#1096806) * When using the sanlock daemon for managing access to shared storage, libvirt expected all QEMU domains to be registered with sanlock. However, if a QEMU domain was started prior to enabling sanlock, the domain was not registered with sanlock. Consequently, migration of a virtual machine (VM) from such a QEMU domain failed with a libvirt error. With this update, libvirt verifies whether a QEMU domain process is registered with sanlock before it starts working with the domain, ensuring that migration of virtual machines works as expected. (BZ#1097227) All libvirt users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, libvirtd will be restarted automatically. 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/site/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1088290 - CVE-2014-0179 libvirt: unsafe parsing of XML documents allows libvirt DoS and/or arbitrary file read 1091206 - libvirtd crashed after hot-unplug the vcpus which is pinned to host cpus 1096806 - [BUG] Quality of service does just apply to protocol "ip" instead of the device 1097227 - VM migration in RHEV environment failed due to libvirt error "Failed to inquire lock: No such process" |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2014-0560.html |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-20 | Improper Input Validation |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:24887 | |||
Oval ID: | oval:org.mitre.oval:def:24887 | ||
Title: | RHSA-2014:0560: libvirt security and bug fix update (Moderate) | ||
Description: | The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. It was found that libvirt passes the XML_PARSE_NOENT flag when parsing XML documents using the libxml2 library, in which case all XML entities in the parsed documents are expanded. A user able to force libvirtd to parse an XML document with an entity pointing to a special file that blocks on read access could use this flaw to cause libvirtd to hang indefinitely, resulting in a denial of service on the system. (CVE-2014-0179) Red Hat would like to thank the upstream Libvirt project for reporting this issue. Upstream acknowledges Daniel P. Berrange and Richard Jones as the original reporters. This update also fixes the following bugs: * When hot unplugging a virtual CPU (vCPU), libvirt kept a pointer to already freed memory if the vCPU was pinned to a host CPU. Consequently, when reading the CPU pinning information, libvirt terminated unexpectedly due to an attempt to access this memory. This update ensures that libvirt releases the pointer to the previously allocated memory when a vCPU is being hot unplugged, and it no longer crashes in this situation. (BZ#1091206) * Previously, libvirt passed an incorrect argument to the "tc" command when setting quality of service (QoS) on a network interface controller (NIC). As a consequence, QoS was applied only to IP traffic. With this update, libvirt constructs the "tc" command correctly so that QoS is applied to all traffic as expected. (BZ#1096806) * When using the sanlock daemon for managing access to shared storage, libvirt expected all QEMU domains to be registered with sanlock. However, if a QEMU domain was started prior to enabling sanlock, the domain was not registered with sanlock. Consequently, migration of a virtual machine (VM) from such a QEMU domain failed with a libvirt error. With this update, libvirt verifies whether a QEMU domain process is registered with sanlock before it starts working with the domain, ensuring that migration of virtual machines works as expected. (BZ#1097227) All libvirt users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, libvirtd will be restarted automatically. | ||
Family: | unix | Class: | patch |
Reference(s): | RHSA-2014:0560-00 CESA-2014:0560 CVE-2014-0179 | Version: | 3 |
Platform(s): | Red Hat Enterprise Linux 6 CentOS Linux 6 | Product(s): | libvirt |
Definition Synopsis: | |||
|
Definition Id: oval:org.mitre.oval:def:25169 | |||
Oval ID: | oval:org.mitre.oval:def:25169 | ||
Title: | ELSA-2014:0560: libvirt security and bug fix update (Moderate) | ||
Description: | The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. It was found that libvirt passes the XML_PARSE_NOENT flag when parsing XML documents using the libxml2 library, in which case all XML entities in the parsed documents are expanded. A user able to force libvirtd to parse an XML document with an entity pointing to a special file that blocks on read access could use this flaw to cause libvirtd to hang indefinitely, resulting in a denial of service on the system. (CVE-2014-0179) Red Hat would like to thank the upstream Libvirt project for reporting this issue. Upstream acknowledges Daniel P. Berrange and Richard Jones as the original reporters. This update also fixes the following bugs: * When hot unplugging a virtual CPU (vCPU), libvirt kept a pointer to already freed memory if the vCPU was pinned to a host CPU. Consequently, when reading the CPU pinning information, libvirt terminated unexpectedly due to an attempt to access this memory. This update ensures that libvirt releases the pointer to the previously allocated memory when a vCPU is being hot unplugged, and it no longer crashes in this situation. (BZ#1091206) * Previously, libvirt passed an incorrect argument to the "tc" command when setting quality of service (QoS) on a network interface controller (NIC). As a consequence, QoS was applied only to IP traffic. With this update, libvirt constructs the "tc" command correctly so that QoS is applied to all traffic as expected. (BZ#1096806) * When using the sanlock daemon for managing access to shared storage, libvirt expected all QEMU domains to be registered with sanlock. However, if a QEMU domain was started prior to enabling sanlock, the domain was not registered with sanlock. Consequently, migration of a virtual machine (VM) from such a QEMU domain failed with a libvirt error. With this update, libvirt verifies whether a QEMU domain process is registered with sanlock before it starts working with the domain, ensuring that migration of virtual machines works as expected. (BZ#1097227) All libvirt users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, libvirtd will be restarted automatically. | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2014:0560-00 CVE-2014-0179 | Version: | 4 |
Platform(s): | Oracle Linux 6 | Product(s): | libvirt |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:25402 | |||
Oval ID: | oval:org.mitre.oval:def:25402 | ||
Title: | RHSA-2014:0914: libvirt security and bug fix update (Moderate) | ||
Description: | The libvirt library is a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. It was found that libvirt passes the XML_PARSE_NOENT flag when parsing XML documents using the libxml2 library, in which case all XML entities in the parsed documents are expanded. A user able to force libvirtd to parse an XML document with an entity pointing to a file could use this flaw to read the contents of that file; parsing an XML document with an entity pointing to a special file that blocks on read access could cause libvirtd to hang indefinitely, resulting in a denial of service on the system. (CVE-2014-0179) Red Hat would like to thank the upstream Libvirt project for reporting this issue. Upstream acknowledges Daniel P. Berrange and Richard Jones as the original reporters. This update also fixes the following bugs: * A previous update of the libvirt package introduced an error; a SIG_SETMASK argument was incorrectly replaced by a SIG_BLOCK argument after the poll() system call. Consequently, the SIGCHLD signal could be permanently blocked, which caused signal masks to not return to their original values and defunct processes to be generated. With this update, the original signal masks are restored and defunct processes are no longer generated. (BZ#1112689) * An attempt to start a domain that did not exist caused network filters to be locked for read-only access. As a consequence, when trying to gain read-write access, a deadlock occurred. This update applies a patch to fix this bug and an attempt to start a non-existent domain no longer causes a deadlock in the described scenario. (BZ#1112690) * Previously, the libvirtd daemon was binding only to addresses that were configured on certain network interfaces. When libvirtd started before the IPv4 addresses had been configured, libvirtd listened only on the IPv6 addresses. The daemon has been modified to not require an address to be configured when binding to a wildcard address, such as "0.0.0.0" or "::". As a result, libvirtd binds to both IPv4 and IPv6 addresses as expected. (BZ#1112692) Users of libvirt are advised to upgrade to these updated packages, which fix these bugs. After installing the updated packages, libvirtd will be restarted automatically. | ||
Family: | unix | Class: | patch |
Reference(s): | RHSA-2014:0914-00 CESA-2014:0914 CVE-2014-0179 | Version: | 3 |
Platform(s): | Red Hat Enterprise Linux 7 CentOS Linux 7 | Product(s): | libvirt |
Definition Synopsis: | |||
|
Definition Id: oval:org.mitre.oval:def:27007 | |||
Oval ID: | oval:org.mitre.oval:def:27007 | ||
Title: | DEPRECATED: ELSA-2014-0560 -- libvirt security and bug fix update (moderate) | ||
Description: | [0.10.2-29.0.1.el6_5.8] - Replace docs/et.png in tarball with blank image [0.10.2-29.el6_5.8] - LSN-2014-0003: Don't expand entities when parsing XML (CVE-2014-0179) - QoS: make tc filters match all traffic (rhbz#1096806) - use virBitmapFree instead of VIR_FREE for cpumask (rhbz#1091206) - Properly free vcpupin info for unplugged CPUs (rhbz#1091206) - sanlock: code movement in virLockManagerSanlockAcquire (rhbz#1097227) - sanlock: don't fail with unregistered domains (rhbz#1097227) - sanlock: avoid leak in acquire() (rhbz#1097227) | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2014-0560 CVE-2014-0179 | Version: | 4 |
Platform(s): | Oracle Linux 6 | Product(s): | libvirt |
Definition Synopsis: | |||
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2015-03-30 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2015-115.nasl - Type : ACT_GATHER_INFO |
2014-12-09 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201412-04.nasl - Type : ACT_GATHER_INFO |
2014-11-08 | Name : The remote Red Hat host is missing a security update. File : redhat-RHSA-2014-0629.nasl - Type : ACT_GATHER_INFO |
2014-10-01 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-2366-1.nasl - Type : ACT_GATHER_INFO |
2014-09-29 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-3038.nasl - Type : ACT_GATHER_INFO |
2014-07-30 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2014-0914.nasl - Type : ACT_GATHER_INFO |
2014-07-24 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2014-0914.nasl - Type : ACT_GATHER_INFO |
2014-07-23 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2014-0914.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_libvirt-140507.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2014-372.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2014-369.nasl - Type : ACT_GATHER_INFO |
2014-05-29 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2014-0560.nasl - Type : ACT_GATHER_INFO |
2014-05-28 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20140527_libvirt_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2014-05-28 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2014-0560.nasl - Type : ACT_GATHER_INFO |
2014-05-28 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2014-0560.nasl - Type : ACT_GATHER_INFO |
2014-05-26 | Name : The remote Fedora host is missing a security update. File : fedora_2014-6586.nasl - Type : ACT_GATHER_INFO |
2014-05-19 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2014-097.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
---|---|
2014-08-04 21:29:27 |
|
2014-08-04 00:25:09 |
|
2014-05-30 13:23:33 |
|
2014-05-29 13:23:36 |
|
2014-05-27 21:22:05 |
|