Fabrice Bellard QEMU qcow2_open null pointer dereference

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4.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Fabrice Bellard QEMU. This impacts the function qcow2_open. Executing a manipulation can lead to null pointer dereference. This vulnerability is handled as CVE-2014-0146. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as problematic was found in Fabrice Bellard QEMU (Virtualization Software) (the affected version unknown). This vulnerability affects the function qcow2_open. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The weakness was released 03/26/2014 by Kevin Wolf with Red Hat as [Qemu-devel] [PATCH for-2.0 00/47] block: image format input validation as confirmed posting (Mailing List). The advisory is shared for download at lists.gnu.org. This vulnerability was named CVE-2014-0146 since 12/03/2013. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 73656 (CentOS 6 : qemu-kvm (CESA-2014:0420)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166916 (SUSE Enterprise Linux Security Update for kvm (SUSE-SU-2014:0623-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at lists.gnu.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (92142), Tenable (73656), SecurityFocus (BID 66472†), Secunia (SA57878†) and Vulnerability Center (SBV-44771†). Entries connected to this vulnerability are available at VDB-8570, VDB-12734, VDB-12735 and VDB-12737. 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: 4.7
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73656
Nessus Name: CentOS 6 : qemu-kvm (CESA-2014:0420)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 881925
OpenVAS Name: CentOS Update for qemu-guest-agent CESA-2014:0420 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: lists.gnu.org

Timelineinfo

12/03/2013 🔍
03/26/2014 +113 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
04/01/2014 +6 days 🔍
04/15/2014 +14 days 🔍
06/05/2014 +51 days 🔍
08/10/2017 +1162 days 🔍
06/16/2021 +1406 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: [Qemu-devel] [PATCH for-2.0 00/47] block: image format input validation
Researcher: Kevin Wolf
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-0146 (🔍)
GCVE (CVE): GCVE-0-2014-0146
GCVE (VulDB): GCVE-100-12736

OVAL: 🔍

X-Force: 92142 - QEMU qcow2_open() denial of service, Low Risk
SecurityFocus: 66472 - QEMU CVE-2014-0146 NULL Pointer Dereference Local Denial of Service Vulnerability
Secunia: 57878 - Qemu virtio-net "virtio_net_handle_mac()" Integer Overflow Vulnerability, Not Critical
Vulnerability Center: 44771 - QEMU <2.0 Local DoS due to Null Dereference in qcow2_open(), Low

See also: 🔍

Entryinfo

Created: 04/01/2014 14:34
Updated: 06/16/2021 12:26
Changes: 04/01/2014 14:34 (81), 05/29/2017 11:56 (1), 06/16/2021 12:11 (4), 06/16/2021 12:18 (11), 06/16/2021 12:26 (1)
Complete: 🔍
Cache ID: 216::103

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