Fabrice Bellard QEMU up to 1.7.1 State Loader virtio/virtio.c virtio_load code injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Fabrice Bellard QEMU up to 1.7.1. This vulnerability affects the function virtio_load of the file virtio/virtio.c of the component State Loader. Performing a manipulation results in code injection. This vulnerability is cataloged as CVE-2013-4151. There is no exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Fabrice Bellard QEMU up to 1.7.1 (Virtualization Software). This affects the function virtio_load of the file virtio/virtio.c of the component State Loader. 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. The summary by CVE is:

The virtio_load function in virtio/virtio.c in QEMU 1.x before 1.7.2 allows remote attackers to execute arbitrary code via a crafted savevm image, which triggers an out-of-bounds write.

The weakness was shared 02/18/2014 by Petr Matousek as Bug 1066342 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2013-4151 since 06/12/2013. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue. The reason for this vulnerability is this part of code:

num = qemu_get_be32(f);

for (i = 0; i < num; i++) {
   vdev->vq[i].vring.num = qemu_get_be32(f);

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 (93226), Tenable (74047), SecurityFocus (BID 67483†), OSVDB (106036†) and Vulnerability Center (SBV-45698†). The entries VDB-13023, VDB-13254, VDB-13266 and VDB-13267 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Virtualization Software

Vendor

• Fabrice Bellard

Name

• QEMU

Version

• 1.0
• 1.0.1
• 1.1
• 1.4.1
• 1.4.2
• 1.5.0
• 1.5.1
• 1.5.2
• 1.5.3
• 1.6.0
• 1.6.1
• 1.6.2
• 1.7.1

License

• open-source

Website

• Vendor: https://bellard.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: 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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

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 Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.qemu.org

Timelineinfo

06/12/2013 🔍
02/18/2014 +251 days 🔍
02/18/2014 +0 days 🔍
05/16/2014 +87 days 🔍
05/19/2014 +3 days 🔍
05/22/2014 +3 days 🔍
08/07/2014 +77 days 🔍
11/04/2014 +89 days 🔍
06/20/2021 +2420 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: Bug 1066342
Researcher: Petr Matousek
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4151 (🔍)
GCVE (CVE): GCVE-0-2013-4151
GCVE (VulDB): GCVE-100-13269

OVAL: 🔍

X-Force: 93226 - QEMU virtio_load() code execution, Medium Risk
SecurityFocus: 67483 - QEMU Multiple Memory Corruption Vulnerabilities
OSVDB: 106036
Vulnerability Center: 45698 - Qemu <1.7.2 Remote Code Execution and DoS due to Out-of-Bounds Write on Invalid State Load in virtio, High

See also: 🔍

Entryinfo

Created: 05/22/2014 09:51
Updated: 06/20/2021 07:10
Changes: 05/22/2014 09:51 (78), 06/03/2017 07:49 (7), 06/20/2021 07:10 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

Do you want to use VulDB in your project?

Use the official API to access entries easily!