Executive Summary
| Summary | |
|---|---|
| Title | New kvm packages fix several vulnerabilities |
| Informations | |||
|---|---|---|---|
| Name | DSA-2010 | First vendor Publication | 2010-03-10 |
| Vendor | Debian | Last vendor Modification | 2010-03-10 |
| Severity (Vendor) | N/A | Revision | 1 |
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:S/C:N/I:N/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 6.8 | Attack Range | Network |
| Cvss Impact Score | 6.9 | Attack Complexity | Low |
| Cvss Expoit Score | 8 | Authentication | Requires single instance |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Several local vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2010-0298 & CVE-2010-0306 Gleb Natapov discovered issues in the KVM subsystem where missing permission checks (CPL/IOPL) permit a user in a guest system to denial of service a guest (system crash) or gain escalated privileges with the guest. CVE-2010-0309 Marcelo Tosatti fixed an issue in the PIT emulation code in the KVM subsystem that allows privileged users in a guest domain to cause a denial of service (crash) of the host system. CVE-2010-0419 Paolo Bonzini found a bug in KVM that can be used to bypass proper permission checking while loading segment selectors. This potentially allows privileged guest users to execute privileged instructions on the host system. For the stable distribution (lenny), this problem has been fixed in version 72+dfsg-5~lenny5. For the testing distribution (squeeze), and the unstable distribution (sid), these problems will be addressed within the linux-2.6 package. We recommend that you upgrade your kvm package. |
Original Source
| Url : http://www.debian.org/security/2010/dsa-2010 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 75 % | CWE-264 | Permissions, Privileges, and Access Controls |
| 25 % | CWE-16 | Configuration |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:10139 | |||
| Oval ID: | oval:org.mitre.oval:def:10139 | ||
| Title: | The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch. | ||
| Description: | The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2010-0419 | Version: | 5 |
| Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5 | Product(s): | |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:10953 | |||
| Oval ID: | oval:org.mitre.oval:def:10953 | ||
| Title: | The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298. | ||
| Description: | The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2010-0306 | Version: | 5 |
| Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5 | Product(s): | |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:11095 | |||
| Oval ID: | oval:org.mitre.oval:def:11095 | ||
| Title: | The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state data structure, which allows guest OS users to cause a denial of service (host OS crash or hang) by attempting to read the /dev/port file. | ||
| Description: | The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state data structure, which allows guest OS users to cause a denial of service (host OS crash or hang) by attempting to read the /dev/port file. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2010-0309 | Version: | 5 |
| Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5 | Product(s): | |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:11335 | |||
| Oval ID: | oval:org.mitre.oval:def:11335 | ||
| Title: | The x86 emulator in KVM 83 does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) in determining the memory access available to CPL3 code, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, a related issue to CVE-2010-0306. | ||
| Description: | The x86 emulator in KVM 83 does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) in determining the memory access available to CPL3 code, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, a related issue to CVE-2010-0306. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2010-0298 | Version: | 5 |
| Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5 | Product(s): | |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:18623 | |||
| Oval ID: | oval:org.mitre.oval:def:18623 | ||
| Title: | DSA-2010-1 kvm - several vulnerabilities | ||
| Description: | Several local vulnerabilities have been discovered in kvm, a full virtualization system. | ||
| Family: | unix | Class: | patch |
| Reference(s): | DSA-2010-1 CVE-2010-0298 CVE-2010-0306 CVE-2010-0309 CVE-2010-0419 | Version: | 7 |
| Platform(s): | Debian GNU/Linux 5.0 | Product(s): | kvm |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:22115 | |||
| Oval ID: | oval:org.mitre.oval:def:22115 | ||
| Title: | RHSA-2010:0126: kvm security and bug fix update (Important) | ||
| Description: | The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2010:0126-01 CESA-2010:0126 CVE-2009-3722 CVE-2010-0419 | Version: | 29 |
| Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 | Product(s): | kvm |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:22169 | |||
| Oval ID: | oval:org.mitre.oval:def:22169 | ||
| Title: | RHSA-2010:0088: kvm security and bug fix update (Important) | ||
| Description: | The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state data structure, which allows guest OS users to cause a denial of service (host OS crash or hang) by attempting to read the /dev/port file. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2010:0088-02 CESA-2010:0088 CVE-2010-0297 CVE-2010-0298 CVE-2010-0306 CVE-2010-0309 | Version: | 55 |
| Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 | Product(s): | kvm |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:22934 | |||
| Oval ID: | oval:org.mitre.oval:def:22934 | ||
| Title: | ELSA-2010:0088: kvm security and bug fix update (Important) | ||
| Description: | The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state data structure, which allows guest OS users to cause a denial of service (host OS crash or hang) by attempting to read the /dev/port file. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2010:0088-02 CVE-2010-0297 CVE-2010-0298 CVE-2010-0306 CVE-2010-0309 | Version: | 21 |
| Platform(s): | Oracle Linux 5 | Product(s): | kvm |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:23079 | |||
| Oval ID: | oval:org.mitre.oval:def:23079 | ||
| Title: | ELSA-2010:0126: kvm security and bug fix update (Important) | ||
| Description: | The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2010:0126-01 CVE-2009-3722 CVE-2010-0419 | Version: | 13 |
| Platform(s): | Oracle Linux 5 | Product(s): | kvm |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:27791 | |||
| Oval ID: | oval:org.mitre.oval:def:27791 | ||
| Title: | DEPRECATED: ELSA-2010-0126 -- kvm security and bug fix update (important) | ||
| Description: | [kvm-83-105.0.1.el5_4.27] - Add kvm-add-oracle-workaround-for-libvirt-bug.patch [kvm-83-105.el5_4.27] - kvm-kernel-KVM-VMX-Check-cpl-before-emulating-debug-register-ac.patch [bz#563516] - Resolves: bz#563516 (KVM: Check cpl before emulating debug register access [rhel-5.4.z]) [kvm-83-105.el5_4.26] - kvm-kernel-KVM-Don-t-check-access-permission-when-loading-segme.patch [bz#563464] - kvm-kernel-KVM-Disable-move-to-segment-registers-and-jump-far-i.patch [bz#563464] - Resolves: bz#563464 (EMBARGOED CVE-2010-0419 kvm: emulator privilege escalation segment selector check [rhel-5.4.z]) [kvm-83-105.el5_4.25] - kvm-virtio-blk-Fix-reads-turned-into-writes-after-read-e.patch [bz#562776] - kvm-virtio-blk-Handle-bdrv_aio_read-write-NULL-return.patch [bz#562776] - Resolves: bz#562776 (Guest image corruption after RHEV-H update to 5.4-2.1.3.el5_4rhev2_1) [kvm-83-105.el5_4.24] - Apply bz#561022 patches again (undo the reverts from kvm-83-105.el5_4.23) - kvm-qemu-add-routines-for-atomic-16-bit-accesses-take-2.patch [bz#561022] - kvm-qemu-virtio-atomic-access-for-index-values-take-2.patch [bz#561022] - Resolves: bz#561022 (QEMU terminates without warning with virtio-net and SMP enabled) [kvm-83-105.el5_4.23] - Revert bz#561022 patches by now, until they get better testing - kvm-Revert-qemu-virtio-atomic-access-for-index-values.patch [bz#561022] - kvm-Revert-qemu-add-routines-for-atomic-16-bit-accesses.patch [bz#561022] - Related: bz#561022 (QEMU terminates without warning with virtio-net and SMP enabled) | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2010-0126 CVE-2009-3722 CVE-2010-0419 | Version: | 4 |
| Platform(s): | Oracle Linux 5 | Product(s): | kvm |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:27907 | |||
| Oval ID: | oval:org.mitre.oval:def:27907 | ||
| Title: | DEPRECATED: ELSA-2010-0088 -- kvm security and bug fix update (important) | ||
| Description: | [kvm-83-105.0.1.el5_4.22] - Add kvm-add-oracle-workaround-for-libvirt-bug.patch | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2010-0088 CVE-2010-0297 CVE-2010-0298 CVE-2010-0306 CVE-2010-0309 | Version: | 4 |
| Platform(s): | Oracle Linux 5 | Product(s): | kvm |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:7147 | |||
| Oval ID: | oval:org.mitre.oval:def:7147 | ||
| Title: | DSA-2010 kvm -- privilege escalation/denial of service | ||
| Description: | Several local vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems: Gleb Natapov discovered issues in the KVM subsystem where missing permission checks permit a user in a guest system to denial of service a guest or gain escalated privileges with the guest. Marcelo Tosatti fixed an issue in the PIT emulation code in the KVM subsystem that allows privileged users in a guest domain to cause a denial of service of the host system. Paolo Bonzini found a bug in KVM that can be used to bypass proper permission checking while loading segment selectors. This potentially allows privileged guest users to execute privileged instructions on the host system. | ||
| Family: | unix | Class: | patch |
| Reference(s): | DSA-2010 CVE-2010-0298 CVE-2010-0306 CVE-2010-0309 CVE-2010-0419 | Version: | 5 |
| Platform(s): | Debian GNU/Linux 5.0 | Product(s): | kvm |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2010-06-07 | Name : Ubuntu Update for Linux kernel vulnerabilities USN-947-1 File : nvt/gb_ubuntu_USN_947_1.nasl |
| 2010-06-07 | Name : Ubuntu Update for linux regression USN-947-2 File : nvt/gb_ubuntu_USN_947_2.nasl |
| 2010-03-22 | Name : Ubuntu Update for Linux kernel vulnerabilities USN-914-1 File : nvt/gb_ubuntu_USN_914_1.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 62845 | KVM 83 x86 Emulator SMP Segment Register Selector Local Privilege Escalation |
| 62215 | Linux Kernel KVM x86 Code Emulation Functionality CPL / IOPL Local Privilege ... |
| 62112 | Linux Kernel KVM Guest arch/x86/kvm/i8254.c pit_ioport_read() Function Local DoS |
Information Assurance Vulnerability Management (IAVM)
| Date | Description |
|---|---|
| 2010-03-04 | IAVM : 2010-A-0037 - Multiple Vulnerabilities in Linux Kernel Severity : Category I - VMSKEY : V0022704 |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2010-0088.nasl - Type : ACT_GATHER_INFO |
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2010-0126.nasl - Type : ACT_GATHER_INFO |
| 2013-01-24 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2010-0088.nasl - Type : ACT_GATHER_INFO |
| 2013-01-24 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2010-0126.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20100209_kvm_on_SL5_4.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20100301_kvm_on_SL5_4.nasl - Type : ACT_GATHER_INFO |
| 2010-06-04 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-947-1.nasl - Type : ACT_GATHER_INFO |
| 2010-06-04 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-947-2.nasl - Type : ACT_GATHER_INFO |
| 2010-03-17 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-914-1.nasl - Type : ACT_GATHER_INFO |
| 2010-03-11 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2010.nasl - Type : ACT_GATHER_INFO |
| 2010-03-04 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2010-0126.nasl - Type : ACT_GATHER_INFO |
| 2010-02-24 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-1996.nasl - Type : ACT_GATHER_INFO |
| 2010-02-10 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2010-0088.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:29:17 |
|
