VPN Unlimited 4.2.0 on MacOS Helper Tool access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.8$0-$5k0.03

A vulnerability was found in VPN Unlimited 4.2.0 on MacOS (Network Encryption Software). It has been declared as very critical. Affected by this vulnerability is an unknown code block of the component Helper Tool. 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:

VPN Unlimited 4.2.0 for macOS suffers from a root privilege escalation vulnerability in its privileged helper tool. The privileged helper tool implements an XPC interface, which allows arbitrary applications to execute system commands as root.

The bug was discovered 03/16/2018. The weakness was released 03/16/2018 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2018-8739 since 03/16/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/14/2020). MITRE ATT&CK project uses the attack technique T1068 for this issue.

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

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.8

VulDB Base Score: 9.8
VulDB Temp Score: 9.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/16/2018 🔍
03/16/2018 +0 days 🔍
03/16/2018 +0 days 🔍
03/16/2018 +0 days 🔍
03/17/2018 +1 days 🔍
01/14/2020 +668 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2018-8739 (🔍)

Entryinfo

Created: 03/17/2018 12:04
Updated: 01/14/2020 15:50
Changes: 03/17/2018 12:04 (56), 01/14/2020 15:50 (1)
Complete: 🔍

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