Fabrice Bellard QEMU L2 Table block/qcow.c numeric error

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Fabrice Bellard QEMU. Impacted is an unknown function of the file block/qcow.c of the component L2 Table Handler. Executing a manipulation can lead to numeric error. This vulnerability is handled as CVE-2014-0222. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability has been found in Fabrice Bellard QEMU (Virtualization Software) (version unknown) and classified as critical. This vulnerability affects an unknown function of the file block/qcow.c of the component L2 Table Handler. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Integer overflow in the qcow_open function in block/qcow.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service (crash) via a large L2 table in a QCOW version 1 image.

The weakness was released 05/13/2014 by Prasad J Pandit as Bug 1097216 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability was named CVE-2014-0222 since 12/03/2013. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The advisory points out:

Qemu block driver for the QCOW version 1 image format is vulnerable to an integer overflow flaw. It occurs due to weak input validations or logic errors. Such integer overflow could lead to buffer overflows, memory corruption or crash in Qemu instance.

The vulnerability scanner Nessus provides a plugin with the ID 74414 (Fedora 20 : qemu-1.6.2-6.fc20 (2014-6970)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168775 (SUSE Enterprise Linux Security update for xen (SUSE-SU-2016:1154-1)).

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 before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (93140), Tenable (74414), SecurityFocus (BID 67357†) and Vulnerability Center (SBV-45706†). Entries connected to this vulnerability are available at VDB-13276, VDB-13279, VDB-13280 and VDB-13281. Once again VulDB remains the best source for vulnerability data.

Not Affected

  • Red Hat Enterprise Linux 5/6

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: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74414
Nessus Name: Fedora 20 : qemu-1.6.2-6.fc20 (2014-6970)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

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: 🔍

0-Day Time: 🔍

Patch: lists.gnu.org

Timelineinfo

12/03/2013 🔍
05/12/2014 +160 days 🔍
05/12/2014 +0 days 🔍
05/13/2014 +1 days 🔍
05/16/2014 +3 days 🔍
06/10/2014 +25 days 🔍
06/10/2014 +0 days 🔍
08/07/2014 +58 days 🔍
11/04/2014 +89 days 🔍
06/19/2021 +2419 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: Bug 1097216
Researcher: Prasad J Pandit
Status: Confirmed

CVE: CVE-2014-0222 (🔍)
GCVE (CVE): GCVE-0-2014-0222
GCVE (VulDB): GCVE-100-13216

OVAL: 🔍

X-Force: 93140 - QEMU qcow.c integer overflow, High Risk
SecurityFocus: 67357 - QEMU L2 Table Size Validation Integer Overflow Vulnerability
Vulnerability Center: 45706 - Qemu <1.7.2 Remote Code Execution and DoS due Integer Overflow in Qcow1, High

See also: 🔍

Entryinfo

Created: 05/16/2014 16:13
Updated: 06/19/2021 15:37
Changes: 05/16/2014 16:13 (81), 06/03/2017 07:51 (2), 06/19/2021 15:37 (3)
Complete: 🔍
Cache ID: 216:9D0:103

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