VDB-111921 · CVE-2017-16556 · GCVE-0-2017-16556

K7 Antivirus up to 15.1 IOCTL Call 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.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in K7 Antivirus up to 15.1. It has been classified as critical. The impacted element is an unknown function of the component IOCTL Call Handler. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2017-16556. The attack is only possible with local access. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in K7 Antivirus up to 15.1 (Anti-Malware Software). It has been classified as critical. This affects an unknown code block of the component IOCTL Call Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In K7 Antivirus Premium before 15.1.0.53, user-controlled input can be used to allow local users to write to arbitrary memory locations.

The bug was discovered 01/15/2018. The weakness was released 01/16/2018 (Website). The advisory is shared at support.k7computing.com. This vulnerability is uniquely identified as CVE-2017-16556 since 11/06/2017. An attack has to be approached locally. The requirement for exploitation is a authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 15.1.0.53 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-111923, VDB-111922, VDB-111920 and VDB-111918. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Anti-Malware Software

Vendor

Name

Antivirus

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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
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: 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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Antivirus 15.1.0.53

Timelineinfo

11/06/2017 🔍
01/15/2018 +70 days 🔍
01/16/2018 +1 days 🔍
01/16/2018 +0 days 🔍
01/17/2018 +1 days 🔍
12/23/2019 +705 days 🔍

Sourcesinfo

Advisory: support.k7computing.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-16556 (🔍)
GCVE (CVE): GCVE-0-2017-16556
GCVE (VulDB): GCVE-100-111921
See also: 🔍

Entryinfo

Created: 01/17/2018 07:53
Updated: 12/23/2019 17:47
Changes: 01/17/2018 07:53 (61), 12/23/2019 17:47 (5)
Complete: 🔍
Cache ID: 216::103

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