PureVPN up to 5.19.4.0 on Windows PureVPNService.exe untrusted search path

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in PureVPN up to 5.19.4.0 on Windows and classified as critical. The impacted element is an unknown function of the file PureVPNService.exe. Executing a manipulation can lead to untrusted search path. The identification of this vulnerability is CVE-2018-7484. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in PureVPN up to 5.19.4.0 on Windows. This vulnerability affects an unknown code of the file PureVPNService.exe. The manipulation with an unknown input leads to a untrusted search path vulnerability. The CWE definition for the vulnerability is CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in PureVPN through 5.19.4.0 on Windows. The client installation grants the Everyone group Full Control permission to the installation directory. In addition, the PureVPNService.exe service, which runs under NT Authority\SYSTEM privileges, tries to load several dynamic-link libraries using relative paths instead of the absolute path. When not using a fully qualified path, the application will first try to load the library from the directory from which the application is started. As the residing directory of PureVPNService.exe is writable to all users, this makes the application susceptible to privilege escalation through DLL hijacking.

The bug was discovered 02/21/2018. The weakness was shared 02/26/2018 (Website). The advisory is shared for download at defensecode.com. This vulnerability was named CVE-2018-7484 since 02/25/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1574.

The vulnerability was handled as a non-public zero-day exploit for at least 4 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Untrusted search path
CWE: CWE-426
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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

02/21/2018 🔍
02/25/2018 +4 days 🔍
02/25/2018 +0 days 🔍
02/26/2018 +1 days 🔍
02/26/2018 +0 days 🔍
01/08/2020 +681 days 🔍

Sourcesinfo

Advisory: defensecode.com
Status: Not defined

CVE: CVE-2018-7484 (🔍)
GCVE (CVE): GCVE-0-2018-7484
GCVE (VulDB): GCVE-100-113824

Entryinfo

Created: 02/26/2018 15:23
Updated: 01/08/2020 15:45
Changes: 02/26/2018 15:23 (56), 01/08/2020 15:45 (1)
Complete: 🔍
Cache ID: 216:A1C:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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