kvm qemu-kvm 0.12/0.14.0 input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in kvm qemu-kvm 0.12/0.14.0. It has been rated as critical. This affects an unknown function. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2011-2512. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in kvm qemu-kvm 0.12/0.14.0 (Virtualization Software). This affects an unknown function. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The virtio_queue_notify in qemu-kvm 0.14.0 and earlier does not properly validate the virtqueue number, which allows guest users to cause a denial of service (guest crash) and possibly execute arbitrary code via a negative number in the Queue Notify field of the Virtio Header, which bypasses a signed comparison.

The weakness was disclosed 06/21/2012 by Petr Matousek (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2011-2512 since 06/15/2011. The exploitability is told to be easy. The attack needs to approached within the local network. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 55490 (Debian DSA-2270-1 : qemu-kvm - programming error), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165261 (SUSE Security Update for kvm (openSUSE-SU-2011:0803-1)).

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 (55490), SecurityFocus (BID 48499†), OSVDB (74751†), Secunia (SA44458†) and Vulnerability Center (SBV-32204†). The entry VDB-61046 is pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 55490
Nessus Name: Debian DSA-2270-1 : qemu-kvm - programming error
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 69978
OpenVAS Name: Debian Security Advisory DSA 2270-1 (qemu-kvm)
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: 7157e2e23e89adcd436caeab31fdd6b47eded377

Timelineinfo

05/19/2011 🔍
06/15/2011 +27 days 🔍
06/29/2011 +14 days 🔍
06/29/2011 +0 days 🔍
07/05/2011 +6 days 🔍
07/12/2011 +7 days 🔍
06/21/2012 +345 days 🔍
06/21/2012 +0 days 🔍
03/23/2015 +1005 days 🔍
12/04/2021 +2448 days 🔍

Sourcesinfo

Advisory: DSA-2270
Researcher: Petr Matousek
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2512 (🔍)
GCVE (CVE): GCVE-0-2011-2512
GCVE (VulDB): GCVE-100-61047

OVAL: 🔍

SecurityFocus: 48499 - QEMU KVM 'virtio_queue_notify()' Local Privilege Escalation Vulnerability
Secunia: 44458 - Qemu Two Vulnerabilities, Less Critical
OSVDB: 74751
Vulnerability Center: 32204 - QEMU \x27virtio-blk\x27 Driver Local Arbitrary Code Execution Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/04/2021 09:44
Changes: 03/23/2015 16:50 (63), 03/27/2017 09:10 (14), 12/04/2021 09:39 (5), 12/04/2021 09:40 (1), 12/04/2021 09:44 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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