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.
6.4	$0-$5k	0.00

A vulnerability classified as critical was found in QEMU (Virtualization Software) (the affected version unknown). Affected by this vulnerability is an unknown part of the file hw/usb/redirect.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

Stack-based buffer overflow in hw/usb/redirect.c in QEMU (aka Quick Emulator) allows local guest OS users to cause a denial of service (QEMU process crash) via vectors related to logging debug messages.

The bug was discovered 07/07/2017. The weakness was shared 08/02/2017 by Li Qiang with 360.cn Inc. (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2017-10806 since 07/03/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 18 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 102008 (Fedora 25 : 2:qemu (2017-f941184db1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157870 (Oracle Enterprise Linux Security Update for qemu (ELSA-2018-4285)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (102008). The entries 100809, 104780, 105675 and 105830 are related to this item.

Productinfo

Type

• Virtualization Software

Name

• QEMU

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 102008
Nessus Name: Fedora 25 : 2:qemu (2017-f941184db1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703925
OpenVAS Name: Debian Security Advisory DSA 3925-1 (qemu - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/03/2017 🔍
07/07/2017 +4 days 🔍
07/07/2017 +0 days 🔍
07/25/2017 +18 days 🔍
07/27/2017 +2 days 🔍
08/02/2017 +6 days 🔍
08/02/2017 +0 days 🔍
08/03/2017 +1 days 🔍
12/14/2022 +1959 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: FEDORA-2017-f941184db1
Researcher: Li Qiang
Organization: 360.cn Inc.
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-10806 (🔍)
OVAL: 🔍

SecurityFocus: 99475 - QEMU CVE-2017-10806 Stack Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 08/03/2017 10:39
Updated: 12/14/2022 15:58
Changes: 08/03/2017 10:39 (77), 11/03/2019 10:43 (3), 12/14/2022 15:52 (4), 12/14/2022 15:58 (1)
Complete: 🔍

Discussion

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