VDB-132017 · CVE-2019-6492 · GCVE-0-2019-6492

IObit Smart Defrag 6 Driver SmartDefragDriver.sys Leak information disclosure

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.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in IObit Smart Defrag 6. The affected element is an unknown function in the library SmartDefragDriver.sys of the component Driver. The manipulation leads to information disclosure (Leak). This vulnerability is uniquely identified as CVE-2019-6492. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in IObit Smart Defrag 6 and classified as problematic. This issue affects an unknown code in the library SmartDefragDriver.sys of the component Driver. The manipulation with an unknown input leads to a information disclosure vulnerability (Leak). Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is availability. The summary by CVE is:

SmartDefragDriver.sys (2.0) in IObit Smart Defrag 6 never frees an executable kernel pool that is allocated with user defined bytes and size when IOCTL 0x9C401CC4 is called. This kernel pointer can be leaked if the kernel pool becomes a "big" pool.

The bug was discovered 01/18/2019. The weakness was disclosed 03/21/2019. The identification of this vulnerability is CVE-2019-6492 since 01/18/2019. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 62 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

IObit

Name

Smart Defrag

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
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
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Leak
Class: Information disclosure / Leak
CWE: CWE-200 / CWE-284 / CWE-266
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/18/2019 🔍
01/18/2019 +0 days 🔍
03/21/2019 +62 days 🔍
03/22/2019 +1 days 🔍
08/04/2023 +1596 days 🔍

Sourcesinfo

Advisory: downwithup.github.io
Status: Not defined

CVE: CVE-2019-6492 (🔍)
GCVE (CVE): GCVE-0-2019-6492
GCVE (VulDB): GCVE-100-132017

Entryinfo

Created: 03/22/2019 08:39
Updated: 08/04/2023 07:31
Changes: 03/22/2019 08:39 (55), 05/18/2020 16:17 (1), 08/04/2023 07:31 (3)
Complete: 🔍
Cache ID: 216::103