QEMU hw/char/serial.c serial_update_parameters divide by zero

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in QEMU. Affected is the function serial_update_parameters of the file hw/char/serial.c. The manipulation results in divide by zero. This vulnerability is reported as CVE-2016-8669. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in QEMU (Virtualization Software) (affected version not known). Affected is the function serial_update_parameters of the file hw/char/serial.c. The manipulation with an unknown input leads to a divide by zero vulnerability. CWE is classifying the issue as CWE-369. The product divides a value by zero. This is going to have an impact on availability. CVE summarizes:

The serial_update_parameters function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via vectors involving a value of divider greater than baud base.

The weakness was disclosed 11/04/2016 with Huawei (Website). The advisory is shared for download at git.qemu.org. This vulnerability is traded as CVE-2016-8669 since 10/15/2016. The attack needs to be approached locally. A authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 900047 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169412 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2016:2988-1)).

Applying the patch 3592fe0c919cf27a81d8e9f9b4f269553418bb01 is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (900047) and SecurityFocus (BID 93563†). The entries VDB-92454, VDB-92455, VDB-92462 and VDB-93307 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.0
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.0
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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: 900047
Nessus File: 🔍

OpenVAS ID: 65785
OpenVAS Name: SuSE Update for qemu openSUSE-SU-2016:3103-1 (qemu)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 3592fe0c919cf27a81d8e9f9b4f269553418bb01

Timelineinfo

10/14/2016 🔍
10/15/2016 +1 days 🔍
11/04/2016 +20 days 🔍
11/04/2016 +0 days 🔍
11/07/2016 +3 days 🔍
09/29/2022 +2152 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2017:2392
Organization: Huawei
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8669 (🔍)
GCVE (CVE): GCVE-0-2016-8669
GCVE (VulDB): GCVE-100-93312
SecurityFocus: 93563 - QEMU '/hw/char/serial.c' Divide By Zero Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 11/07/2016 22:10
Updated: 09/29/2022 14:40
Changes: 11/07/2016 22:10 (57), 05/26/2019 16:17 (13), 09/29/2022 14:40 (4)
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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