| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.2 | $0-$5k | 0.00 |
Summary
A vulnerability described as problematic has been identified in Fabrice Bellard QEMU 1.7.0. The impacted element is the function virtio_load. The manipulation results in code injection.
This vulnerability is cataloged as CVE-2013-6399. There is no exploit available.
It is advisable to implement a patch to correct this issue.
Details
A vulnerability classified as problematic has been found in Fabrice Bellard QEMU 1.7.0 (Virtualization Software). Affected is the function virtio_load. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:
Array index error in the virtio_load function in hw/virtio/virtio.c in QEMU before 1.7.2 allows remote attackers to execute arbitrary code via a crafted savevm image.
The weakness was shared 02/18/2014 by Petr Matousek as Bug 1066361 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2013-6399 since 11/04/2013. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059. The advisory points out:
vdev->queue_sel is read from the wire, and later used in the emulation code as an index into vdev->vq[]. If the value of vdev->queue_sel exceeds the length of vdev->vq[], currently allocated to be VIRTIO_PCI_QUEUE_MAX elements, subsequent PIO operations such as VIRTIO_PCI_QUEUE_PFN can be used to overrun the buffer with arbitrary data. An user able to alter the savevm data (either on the disk or over the wire during migration) could use this flaw to to corrupt QEMU process memory on the (destination) host, which could potentially result in arbitrary code execution on the host with the privileges of the QEMU process.
The vulnerability scanner Nessus provides a plugin with the ID 74047 (Fedora 20 : qemu-1.6.2-5.fc20 (2014-6288)), 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 157057 (Oracle Enterprise Linux Security Update for qemu-kvm (ELSA-2015-0349)).
Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu.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 (93241), Tenable (74047), SecurityFocus (BID 67483†), OSVDB (106035†) and Vulnerability Center (SBV-45701†). The entries VDB-13023, VDB-13254, VDB-13266 and VDB-13267 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.
Not Affected
- Red Hat Enterprise Linux 5/6
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://bellard.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.9VulDB Meta Temp Score: 5.2
VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Code injectionCWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍
Physical: Partially
Local: Yes
Remote: Yes
Availability: 🔍
Status: Unproven
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
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Nessus ID: 74047
Nessus Name: Fedora 20 : qemu-1.6.2-5.fc20 (2014-6288)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 80056
OpenVAS Name: Oracle Linux Local Check: ELSA-2014-0927
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: git.qemu.org
Timeline
11/04/2013 🔍02/18/2014 🔍
02/18/2014 🔍
05/16/2014 🔍
05/19/2014 🔍
05/22/2014 🔍
08/07/2014 🔍
11/04/2014 🔍
06/20/2021 🔍
Sources
Vendor: bellard.orgAdvisory: Bug 1066361
Researcher: Petr Matousek
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2013-6399 (🔍)
GCVE (CVE): GCVE-0-2013-6399
GCVE (VulDB): GCVE-100-13284
OVAL: 🔍
X-Force: 93241 - QEMU virtio_load() code execution, Medium Risk
SecurityFocus: 67483 - QEMU Multiple Memory Corruption Vulnerabilities
OSVDB: 106035
Vulnerability Center: 45701 - Qemu <1.7.2 Remote Code Execution and DoS due to Buffer Overrun on Incoming Migration in Virtio, High
See also: 🔍
Entry
Created: 05/22/2014 12:10Updated: 06/20/2021 08:40
Changes: 05/22/2014 12:10 (71), 06/03/2017 07:50 (13), 06/20/2021 08:40 (3)
Complete: 🔍
Cache ID: 216:12E:103
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