Linux Kernel up to 3.1.9 kvm_vm_ioctl_assign_device access control

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 3.1.9. Impacted is the function kvm_vm_ioctl_assign_device. Such manipulation leads to access control. This vulnerability is documented as CVE-2011-4347. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 3.1.9 (Operating System) and classified as problematic. Affected by this issue is the function kvm_vm_ioctl_assign_device. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is availability. CVE summarizes:

The kvm_vm_ioctl_assign_device function in virt/kvm/assigned-dev.c in the KVM subsystem in the Linux kernel before 3.1.10 does not verify permission to access PCI configuration space and BAR resources, which allows host OS users to assign PCI devices and cause a denial of service (host OS crash) via a KVM_ASSIGN_PCI_DEVICE operation.

The issue has been introduced in 10/24/2011. The weakness was released 06/08/2013 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2011-4347. The exploitation is known to be difficult. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/03/2022). The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 593 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 68466 (Oracle Linux 5 : kvm (ELSA-2012-0149)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350692 (Amazon Linux Security Advisory for kernel: ALAS-2012-055).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (68466), SecurityFocus (BID 50811†) and Vulnerability Center (SBV-33913†). Entries connected to this vulnerability are available at VDB-4434, VDB-4553, VDB-4488 and VDB-4536. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.1
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68466
Nessus Name: Oracle Linux 5 : kvm (ELSA-2012-0149)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892443
OpenVAS Name: Debian Security Advisory DSA 2443-1 (linux-2.6 - privilege escalation/denial of service
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

10/24/2011 🔍
11/04/2011 +10 days 🔍
11/24/2011 +20 days 🔍
11/27/2011 +3 days 🔍
06/08/2013 +559 days 🔍
06/08/2013 +0 days 🔍
07/12/2013 +34 days 🔍
03/24/2015 +620 days 🔍
01/03/2022 +2477 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2012:0149
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-4347 (🔍)
GCVE (CVE): GCVE-0-2011-4347
GCVE (VulDB): GCVE-100-64256

OVAL: 🔍

SecurityFocus: 50811
Vulnerability Center: 33913 - Linux Kernel Remote Unauthorized Access Vulnerability, High

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/03/2022 09:31
Changes: 03/24/2015 15:54 (62), 04/05/2017 14:53 (7), 01/03/2022 09:29 (6), 01/03/2022 09:31 (2)
Complete: 🔍
Cache ID: 216::103

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