Executive Summary
Summary | |
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Title | kvm security and bug fix update |
Informations | |||
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Name | RHSA-2009:1465 | First vendor Publication | 2009-09-29 |
Vendor | RedHat | Last vendor Modification | 2009-09-29 |
Severity (Vendor) | Important | 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:L/AC:L/Au:N/C:C/I:C/A:C) | |||
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Cvss Base Score | 7.2 | Attack Range | Local |
Cvss Impact Score | 10 | Attack Complexity | Low |
Cvss Expoit Score | 3.9 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: Updated kvm packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: RHEL Desktop Multi OS (v. 5 client) - x86_64 RHEL Virtualization (v. 5 server) - x86_64 3. Description: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel. The kvm_emulate_hypercall() implementation was missing a check for the Current Privilege Level (CPL). A local, unprivileged user in a virtual machine could use this flaw to cause a local denial of service or escalate their privileges within that virtual machine. (CVE-2009-3290) This update also fixes the following bugs: * non-maskable interrupts (NMI) were not supported on systems with AMD processors. As a consequence, Windows Server 2008 R2 guests running with more than one virtual CPU assigned on systems with AMD processors would hang at the Windows shut down screen when a restart was attempted. This update adds support for NMI filtering on systems with AMD processors, allowing clean restarts of Windows Server 2008 R2 guests running with multiple virtual CPUs. (BZ#520694) * significant performance issues for guests running 64-bit editions of Windows. This update improves performance for guests running 64-bit editions of Windows. (BZ#521793) * Windows guests may have experienced time drift. (BZ#521794) * removing the Red Hat VirtIO Ethernet Adapter from a guest running Windows Server 2008 R2 caused KVM to crash. With this update, device removal should not cause this issue. (BZ#524557) All KVM users should upgrade to these updated packages, which contain backported patches to resolve these issues. Note: The procedure in the Solution section must be performed before this update takes effect. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/docs/DOC-11259 The following procedure must be performed before this update takes effect: 1. Stop all KVM guest virtual machines. 2. Either reboot the hypervisor machine or, as the root user, remove (using "modprobe -r [module]") and reload (using "modprobe [module]") all of the following modules which are currently running (determined using "lsmod"): kvm, ksm, kvm-intel or kvm-amd. 3. Restart the KVM guest virtual machines. 5. Bugs fixed (http://bugzilla.redhat.com/): 520694 - NMI filtering for AMD (Windows 2008 R2 KVM guest can not restart when set it as multiple cpus) 521793 - windows 64 bit does vmexit on each cr8 access. 521794 - rtc-td-hack stopped working. Time drifts in windows 524124 - CVE-2009-3290 kernel: KVM: x86: Disallow hypercalls for guest callers in rings > 0 524557 - QEMU crash (during virtio-net WHQL tests for Win2008 R2) |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2009-1465.html |
CWE : Common Weakness Enumeration
% | Id | Name |
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100 % | CWE-399 | Resource Management Errors |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:11328 | |||
Oval ID: | oval:org.mitre.oval:def:11328 | ||
Title: | The kvm_emulate_hypercall function in arch/x86/kvm/x86.c in KVM in the Linux kernel 2.6.25-rc1, and other versions before 2.6.31, when running on x86 systems, does not prevent access to MMU hypercalls from ring 0, which allows local guest OS users to cause a denial of service (guest kernel crash) and read or write guest kernel memory via unspecified "random addresses." | ||
Description: | The kvm_emulate_hypercall function in arch/x86/kvm/x86.c in KVM in the Linux kernel 2.6.25-rc1, and other versions before 2.6.31, when running on x86 systems, does not prevent access to MMU hypercalls from ring 0, which allows local guest OS users to cause a denial of service (guest kernel crash) and read or write guest kernel memory via unspecified "random addresses." | ||
Family: | unix | Class: | vulnerability |
Reference(s): | CVE-2009-3290 | Version: | 5 |
Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5 | Product(s): | |
Definition Synopsis: | |||
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Definition Id: oval:org.mitre.oval:def:13413 | |||
Oval ID: | oval:org.mitre.oval:def:13413 | ||
Title: | DSA-1907-1 kvm -- several vulnerabilities | ||
Description: | Several vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2008-5714 Chris Webb discovered an off-by-one bug limiting KVM's VNC passwords to 7 characters. This flaw might make it easier for remote attackers to guess the VNC password, which is limited to seven characters where eight was intended. CVE-2009-3290 It was discovered that the kvm_emulate_hypercall function in KVM does not prevent access to MMU hypercalls from ring 0, which allows local guest OS users to cause a denial of service and read or write guest kernel memory. For the stable distribution, these problems have been fixed in version 72+dfsg-5~lenny3. The oldstable distribution does not contain kvm. For the testing distribution these problems will be fixed soon. For the unstable distribution these problems have been fixed in version 85+dfsg-4.1 We recommend that you upgrade your kvm packages. | ||
Family: | unix | Class: | patch |
Reference(s): | DSA-1907-1 CVE-2008-5714 CVE-2009-3290 | Version: | 5 |
Platform(s): | Debian GNU/Linux 5.0 | Product(s): | kvm |
Definition Synopsis: | |||
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Definition Id: oval:org.mitre.oval:def:22837 | |||
Oval ID: | oval:org.mitre.oval:def:22837 | ||
Title: | ELSA-2009:1465: kvm security and bug fix update (Important) | ||
Description: | The kvm_emulate_hypercall function in arch/x86/kvm/x86.c in KVM in the Linux kernel 2.6.25-rc1, and other versions before 2.6.31, when running on x86 systems, does not prevent access to MMU hypercalls from ring 0, which allows local guest OS users to cause a denial of service (guest kernel crash) and read or write guest kernel memory via unspecified "random addresses." | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2009:1465-01 CVE-2009-3290 | Version: | 6 |
Platform(s): | Oracle Linux 5 | Product(s): | kvm |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:7760 | |||
Oval ID: | oval:org.mitre.oval:def:7760 | ||
Title: | DSA-1907 kvm -- several vulnerabilities | ||
Description: | Several vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems: Chris Webb discovered an off-by-one bug limiting KVM's VNC passwords to 7 characters. This flaw might make it easier for remote attackers to guess the VNC password, which is limited to seven characters where eight was intended. It was discovered that the kvm_emulate_hypercall function in KVM does not prevent access to MMU hypercalls from ring 0, which allows local guest OS users to cause a denial of service (guest kernel crash) and read or write guest kernel memory. The oldstable distribution (etch) does not contain kvm. | ||
Family: | unix | Class: | patch |
Reference(s): | DSA-1907 CVE-2008-5714 CVE-2009-3290 | Version: | 3 |
Platform(s): | Debian GNU/Linux 5.0 | Product(s): | kvm |
Definition Synopsis: | |||
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CPE : Common Platform Enumeration
OpenVAS Exploits
Date | Description |
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2011-08-09 | Name : CentOS Update for kvm-83-105.el5_ CESA-2009:1465 centos5 i386 File : nvt/gb_CESA-2009_1465_kvm-83-105.el5__centos5_i386.nasl |
2010-03-02 | Name : Fedora Update for kernel FEDORA-2010-1804 File : nvt/gb_fedora_2010_1804_kernel_fc11.nasl |
2010-03-02 | Name : Fedora Update for kernel FEDORA-2010-1500 File : nvt/gb_fedora_2010_1500_kernel_fc11.nasl |
2010-03-02 | Name : Fedora Update for kernel FEDORA-2010-0919 File : nvt/gb_fedora_2010_0919_kernel_fc11.nasl |
2009-12-30 | Name : Fedora Core 11 FEDORA-2009-13694 (kernel) File : nvt/fcore_2009_13694.nasl |
2009-12-14 | Name : Fedora Core 10 FEDORA-2009-13098 (kernel) File : nvt/fcore_2009_13098.nasl |
2009-12-10 | Name : Fedora Core 11 FEDORA-2009-12786 (kernel) File : nvt/fcore_2009_12786.nasl |
2009-11-11 | Name : CentOS Security Advisory CESA-2009:1465 (kvm) File : nvt/ovcesa2009_1465.nasl |
2009-11-11 | Name : Mandriva Security Advisory MDVSA-2009:289 (kernel) File : nvt/mdksa_2009_289.nasl |
2009-11-11 | Name : Fedora Core 10 FEDORA-2009-11038 (kernel) File : nvt/fcore_2009_11038.nasl |
2009-11-11 | Name : Fedora Core 11 FEDORA-2009-11032 (kernel) File : nvt/fcore_2009_11032.nasl |
2009-11-11 | Name : Fedora Core 11 FEDORA-2009-10639 (kernel) File : nvt/fcore_2009_10639.nasl |
2009-10-27 | Name : Debian Security Advisory DSA 1915-1 (linux-2.6) File : nvt/deb_1915_1.nasl |
2009-10-19 | Name : Fedora Core 10 FEDORA-2009-10525 (kernel) File : nvt/fcore_2009_10525.nasl |
2009-10-19 | Name : Debian Security Advisory DSA 1907-1 (kvm) File : nvt/deb_1907_1.nasl |
2009-10-06 | Name : Fedora Core 10 FEDORA-2009-10165 (kernel) File : nvt/fcore_2009_10165.nasl |
2009-10-06 | Name : RedHat Security Advisory RHSA-2009:1465 File : nvt/RHSA_2009_1465.nasl |
Open Source Vulnerability Database (OSVDB)
Id | Description |
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58214 | Linux Kernel arch/x86/kvm/x86.c kvm_emulate_hypercall() Function Arbitrary Gu... |
Nessus® Vulnerability Scanner
Date | Description |
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2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2009-1465.nasl - Type : ACT_GATHER_INFO |
2013-01-24 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2009-1465.nasl - Type : ACT_GATHER_INFO |
2010-02-24 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-1907.nasl - Type : ACT_GATHER_INFO |
2010-02-24 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-1915.nasl - Type : ACT_GATHER_INFO |
2010-01-06 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2009-1465.nasl - Type : ACT_GATHER_INFO |
2009-10-28 | Name : The remote Fedora host is missing a security update. File : fedora_2009-10639.nasl - Type : ACT_GATHER_INFO |
2009-10-28 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2009-289.nasl - Type : ACT_GATHER_INFO |
2009-10-22 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-852-1.nasl - Type : ACT_GATHER_INFO |
2009-10-05 | Name : The remote Fedora host is missing a security update. File : fedora_2009-10165.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2014-02-17 11:52:54 |
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