VDB-136111 · CVE-2019-9730 · GCVE-0-2019-9730

Synaptics Sound Device Driver up to 2.28 CxUtilSvc access control

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.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Synaptics Sound Device Driver up to 2.28 and classified as critical. This affects an unknown function of the component CxUtilSvc. This manipulation causes access control. This vulnerability is handled as CVE-2019-9730. It is possible to launch the attack on the local host. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Synaptics Sound Device Driver up to 2.28 (Hardware Driver Software) and classified as critical. Affected by this vulnerability is an unknown part of the component CxUtilSvc. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Incorrect access control in the CxUtilSvc component of the Synaptics Sound Device drivers prior to version 2.29 allows a local attacker to increase access privileges to the Windows Registry via an unpublished API.

The bug was discovered 04/15/2019. The weakness was released 06/05/2019 (Website). It is possible to read the advisory at support.lenovo.com. This vulnerability is known as CVE-2019-9730 since 03/12/2019. Attacking locally is a requirement. A single authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 51 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.29 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Hardware Driver Software

Vendor

Synaptics

Name

Sound Device Driver

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.9

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

NVD Base Score: 8.8
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: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Sound Device Driver 2.29

Timelineinfo

03/12/2019 🔍
04/15/2019 +34 days 🔍
06/05/2019 +51 days 🔍
06/06/2019 +1 days 🔍
06/20/2020 +380 days 🔍

Sourcesinfo

Advisory: support.lenovo.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-9730 (🔍)
GCVE (CVE): GCVE-0-2019-9730
GCVE (VulDB): GCVE-100-136111
OSVDB: - Synaptics Sound Device Driver CxUtilSvc.exe privilege escalation

Entryinfo

Created: 06/06/2019 09:06
Updated: 06/20/2020 12:34
Changes: 06/06/2019 09:06 (60), 06/20/2020 12:34 (1)
Complete: 🔍
Cache ID: 216::103