VDB-117276 · CVE-2018-10646 · Qualys 370930

CyberGhost up to 6.5.0.3180 on Windows ConnectToVpnServer connectionParams access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in CyberGhost up to 6.5.0.3180 on Windows. Impacted is the function ConnectToVpnServer. The manipulation of the argument connectionParams results in access control. This vulnerability is identified as CVE-2018-10646. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability was found in CyberGhost up to 6.5.0.3180 on Windows. It has been classified as critical. Affected is the function ConnectToVpnServer. The manipulation of the argument connectionParams with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

CyberGhost 6.5.0.3180 for Windows suffers from a SYSTEM privilege escalation vulnerability through the "CG6Service" service. This service establishes a NetNamedPipe endpoint that allows arbitrary installed applications to connect and call publicly exposed methods. The "ConnectToVpnServer" method accepts a "connectionParams" argument that provides attacker control of the OpenVPN command line. An attacker can specify a dynamic library plugin that should run for every new VPN connection attempt. This plugin will execute code in the context of the SYSTEM user.

The bug was discovered 05/01/2018. The weakness was released 05/02/2018 (Website). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2018-10646 since 05/02/2018. The attack needs to be approached locally. The requirement for exploitation is a authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

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 $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370930 (Cyberghost VPN Privilege Escalation Vulnerability).

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/01/2018 🔍
05/02/2018 +0 days 🔍
05/02/2018 +0 days 🔍
05/02/2018 +0 days 🔍
05/02/2018 +0 days 🔍
02/01/2020 +640 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2018-10646 (🔍)
GCVE (CVE): GCVE-0-2018-10646
GCVE (VulDB): GCVE-100-117276

Entryinfo

Created: 05/02/2018 15:31
Updated: 02/01/2020 19:59
Changes: 05/02/2018 15:31 (59), 02/01/2020 19:59 (1)
Complete: 🔍
Cache ID: 216::103

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