VDB-79100 · CVE-2015-7295 · BID 82672

QEMU Virtual Network Device hw/virtio/virtio.c memory corruption

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.
5.1	$0-$5k	0.00

A vulnerability was found in QEMU (Virtualization Software) (affected version not known). It has been rated as problematic. Affected by this issue is an unknown function of the file hw/virtio/virtio.c of the component Virtual Network Device. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. Impacted is availability.

The weakness was published 11/09/2015 by Prasad J Pandit (Website). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2015-7295 since 09/18/2015. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/12/2018).

The vulnerability scanner Nessus provides a plugin with the ID 87692 (FreeBSD : qemu -- denial of service vulnerability in virtio-net support (42cbd1e8-b152-11e5-9728-002590263bf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168989 (SUSE Enterprise Linux Security Update for kvm (SUSE-SU-2016:1785-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 82672), Vulnerability Center (SBV-54404) and Tenable (87692). Similar entry is available at 77704.

Productinfoedit

Type

Virtualization Software

Name

QEMU

CPE 2.3infoedit

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CPE 2.2infoedit

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CVSSv3infoedit

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2infoedit

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 87692
Nessus Name: FreeBSD : qemu -- denial of service vulnerability in virtio-net support (42cbd1e8-b152-11e5-9728-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for qemu SUSE-SU-2016:1560-1 (qemu)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

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

Timelineinfoedit

09/18/2015 🔍
10/28/2015 +40 days 🔍
11/09/2015 +12 days 🔍
11/09/2015 +0 days 🔍
11/09/2015 +0 days 🔍
11/10/2015 +1 days 🔍
11/15/2015 +5 days 🔍
01/02/2016 +48 days 🔍
01/04/2016 +2 days 🔍
11/14/2017 +680 days 🔍
04/12/2018 +149 days 🔍