VDB-112763 · CVE-2018-6523 · GCVE-0-2018-6523

nProtect AVS 4.0.0.38 Driver TKFsAv.SYS input validation

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.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in nProtect AVS 4.0.0.38. It has been rated as critical. This affects an unknown part in the library TKFsAv.SYS of the component Driver. The manipulation leads to input validation. This vulnerability is listed as CVE-2018-6523. The attack must be carried out locally. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in nProtect AVS 4.0.0.38. This issue affects an unknown function in the library TKFsAv.SYS of the component Driver. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In nProtect AVS V4.0 4.0.0.38, the driver file (TKFsAv.SYS) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x22045c.

The bug was discovered 02/01/2018. The weakness was presented 02/02/2018 (Website). It is possible to read the advisory at inca.co.kr. The identification of this vulnerability is CVE-2018-6523 since 02/01/2018. Attacking locally is a requirement. The successful exploitation requires a simple authentication. Technical details of the vulnerability are known, but there is no available exploit.

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

See VDB-112762, VDB-112764 and VDB-112765 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

nProtect

Name

Version

4.0.0.38

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.6
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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

02/01/2018 🔍
02/01/2018 +0 days 🔍
02/01/2018 +0 days 🔍
02/02/2018 +1 days 🔍
02/03/2018 +1 days 🔍
01/01/2020 +697 days 🔍

Sourcesinfo

Advisory: inca.co.kr
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-6523 (🔍)
GCVE (CVE): GCVE-0-2018-6523
GCVE (VulDB): GCVE-100-112763
See also: 🔍

Entryinfo

Created: 02/03/2018 08:57
Updated: 01/01/2020 10:02
Changes: 02/03/2018 08:57 (58), 01/01/2020 10:02 (2)
Complete: 🔍
Cache ID: 216::103

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