QEMU NVM Express Controller Emulator out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU. It has been rated as critical. Affected by this issue is some unknown functionality of the component NVM Express Controller Emulator. The manipulation leads to out-of-bounds. This vulnerability is listed as CVE-2018-16847. The attack must be carried out locally. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in QEMU (Virtualization Software) (version unknown). It has been rated as critical. This issue affects an unknown function of the component NVM Express Controller Emulator. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An OOB heap buffer r/w access issue was found in the NVM Express Controller emulation in QEMU. It could occur in nvme_cmb_ops routines in nvme device. A guest user/process could use this flaw to crash the QEMU process resulting in DoS or potentially run arbitrary code with privileges of the QEMU process.

The bug was discovered 11/02/2018. The weakness was presented 11/02/2018 by Li Qiang (oss-sec). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2018-16847 since 09/11/2018. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 119216 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : qemu vulnerabilities (USN-3826-1)), 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 197310 (Ubuntu Security Notification for Qemu Vulnerabilities (USN-3826-1)).

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

The vulnerability is also documented in the databases at Tenable (119216) and SecurityFocus (BID 105866†). See VDB-125149, VDB-125150, VDB-125348 and VDB-126930 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

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

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.0
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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: 119216
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : qemu vulnerabilities (USN-3826-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

09/11/2018 🔍
11/01/2018 +51 days 🔍
11/02/2018 +1 days 🔍
11/02/2018 +0 days 🔍
11/02/2018 +0 days 🔍
11/03/2018 +1 days 🔍
11/26/2018 +23 days 🔍
11/27/2018 +1 days 🔍
06/04/2023 +1650 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3826-1
Researcher: Li Qiang
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-16847 (🔍)
GCVE (CVE): GCVE-0-2018-16847
GCVE (VulDB): GCVE-100-126413
SecurityFocus: 105866 - QEMU CVE-2018-16847 Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 11/03/2018 11:41
Updated: 06/04/2023 11:36
Changes: 11/03/2018 11:41 (73), 04/09/2020 17:06 (6), 06/04/2023 11:28 (4), 06/04/2023 11:36 (12)
Complete: 🔍
Cache ID: 216::103

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