QEMU Virtio Vring divide by zero

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU. It has been declared as problematic. This issue affects some unknown processing of the component Virtio Vring. Such manipulation leads to divide by zero. This vulnerability is uniquely identified as CVE-2017-17381. Local access is required to approach this attack. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (version now known). It has been rated as problematic. Affected by this issue is some unknown processing of the component Virtio Vring. The manipulation with an unknown input leads to a divide by zero vulnerability. Using CWE to declare the problem leads to CWE-369. The product divides a value by zero. Impacted is availability. CVE summarizes:

The Virtio Vring implementation in QEMU allows local OS guest users to cause a denial of service (divide-by-zero error and QEMU process crash) by unsetting vring alignment while updating Virtio rings.

The bug was discovered 12/01/2017. The weakness was disclosed 12/07/2017 with Huawei (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2017-17381 since 12/04/2017. The attack needs to be approached locally. Required for exploitation is a simple authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 107145 (Ubuntu 14.04 LTS / 16.04 LTS : qemu regression (USN-3575-2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197060 (Ubuntu Security Notification for Qemu Vulnerabilities (USN-3575-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (107145) and SecurityFocus (BID 102059†). The entries VDB-109658, VDB-110190, VDB-112687 and VDB-122262 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Divide by zero
CWE: CWE-369 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 107145
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS : qemu regression (USN-3575-2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 840783
OpenVAS Name: SuSE Update for qemu openSUSE-SU-2018:0780-1 (qemu)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

11/24/2017 🔍
12/01/2017 +7 days 🔍
12/04/2017 +3 days 🔍
12/06/2017 +2 days 🔍
12/07/2017 +1 days 🔍
12/07/2017 +0 days 🔍
03/05/2018 +88 days 🔍
03/06/2018 +1 days 🔍
01/17/2023 +1778 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3575-2
Researcher: Huawei IT Network Security Alpha Lab, Dengzhan Heyuandong Bijunhua, Liweichao
Organization: Huawei
Status: Not defined

CVE: CVE-2017-17381 (🔍)
GCVE (CVE): GCVE-0-2017-17381
GCVE (VulDB): GCVE-100-110312

OVAL: 🔍

SecurityFocus: 102059 - QEMU CVE-2017-17381 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/07/2017 09:21
Updated: 01/17/2023 09:30
Changes: 12/07/2017 09:21 (65), 12/12/2019 16:32 (15), 01/26/2021 06:30 (2), 01/17/2023 09:28 (3), 01/17/2023 09:30 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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