Fabrice Bellard QEMU Image Size block/qcow.c qcow_open File numeric error

CVSS Meta Temp Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Fabrice Bellard QEMU. It has been classified as critical. Affected is the function qcow_open of the file block/qcow.c of the component Image Size Handler. Performing a manipulation as part of File results in numeric error. This vulnerability is identified as CVE-2014-0223. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in Fabrice Bellard QEMU (Virtualization Software) (unknown version). This affects the function qcow_open of the file block/qcow.c of the component Image Size Handler. The manipulation as part of a File leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Integer overflow in the qcow_open function in block/qcow.c in QEMU before 1.7.2 allows local users to cause a denial of service (crash) and possibly execute arbitrary code via a large image size, which triggers a buffer overflow or out-of-bounds read.

The weakness was released 05/12/2014 by Prasad J Pandit as not defined posting (Mailing List). The advisory is shared at lists.gnu.org. This vulnerability is uniquely identified as CVE-2014-0223 since 12/03/2013. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The advisory points out:

A huge image size could cause s->l1_size to overflow. Make sure that images never require a L1 table larger than what fits in s->l1_size. This cannot only cause unbounded allocations, but also the allocation of a too small L1 table, resulting in out-of-bounds array accesses (both reads and writes).

The vulnerability scanner Nessus provides a plugin with the ID 76839 (CentOS 7 : qemu-kvm (CESA-2014:0927)), 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 167852 (SUSE Enterprise Linux Security update for KVM (SUSE-SU-2015:0929-1)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (93148), Tenable (76839), SecurityFocus (BID 67391†) and Vulnerability Center (SBV-45707†). Entry connected to this vulnerability is available at VDB-13220. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 7.3
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
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Nessus ID: 76839
Nessus Name: CentOS 7 : qemu-kvm (CESA-2014:0927)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703044
OpenVAS Name: Debian Security Advisory DSA 3044-1 (qemu-kvm - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

12/03/2013 🔍
05/12/2014 +160 days 🔍
05/12/2014 +0 days 🔍
05/12/2014 +0 days 🔍
05/16/2014 +4 days 🔍
06/10/2014 +25 days 🔍
08/07/2014 +58 days 🔍
11/04/2014 +89 days 🔍
06/19/2021 +2419 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: lists.gnu.org
Researcher: Prasad J Pandit
Status: Not defined

CVE: CVE-2014-0223 (🔍)
GCVE (CVE): GCVE-0-2014-0223
GCVE (VulDB): GCVE-100-13221

OVAL: 🔍

X-Force: 93148 - QEMU qcow_open() buffer overflow, Medium Risk
SecurityFocus: 67391 - QEMU Image Size Validation Integer Overflow Vulnerability
Vulnerability Center: 45707 - Qemu <1.7.2 Local Code Execution and DoS due Out-of-Bounds Memory Access in Qcow1, Medium

See also: 🔍

Entryinfo

Created: 05/16/2014 16:27
Updated: 06/19/2021 16:00
Changes: 05/16/2014 16:27 (78), 06/03/2017 07:52 (2), 06/19/2021 16:00 (3)
Complete: 🔍
Cache ID: 216::103

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