VDB-111388 · CVE-2018-5219 · GCVE-0-2018-5219

K7 Antivirus 15.1.0306 Driver K7FWHlpr.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 K7 Antivirus 15.1.0306 and classified as critical. This affects an unknown part in the library K7FWHlpr.sys of the component Driver. Executing a manipulation can lead to input validation. This vulnerability appears as CVE-2018-5219. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability has been found in K7 Antivirus 15.1.0306 (Anti-Malware Software) and classified as critical. This vulnerability affects an unknown code in the library K7FWHlpr.sys of the component Driver. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In K7 Antivirus 15.1.0306, the driver file (K7FWHlpr.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 0x83002168.

The bug was discovered 01/04/2018. The weakness was presented 01/04/2018 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-5219 since 01/04/2018. The attack needs to be approached locally. A single authentication is needed for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 12/19/2019).

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

See VDB-111389, VDB-111386 and VDB-111387 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Anti-Malware Software

Vendor

Name

Antivirus

Version

15.1.0306

License

commercial

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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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

01/04/2018 🔍
01/04/2018 +0 days 🔍
01/04/2018 +0 days 🔍
01/04/2018 +0 days 🔍
01/05/2018 +1 days 🔍
12/19/2019 +713 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2018-5219 (🔍)
GCVE (CVE): GCVE-0-2018-5219
GCVE (VulDB): GCVE-100-111388
See also: 🔍

Entryinfo

Created: 01/05/2018 08:51
Updated: 12/19/2019 19:29
Changes: 01/05/2018 08:51 (59), 12/19/2019 19:29 (1)
Complete: 🔍
Cache ID: 216::103