Druva inSync Windows Client < 6.6.4 Privilege Escalation

high Nessus Plugin ID 136927
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

A web application development suite installed on the remote Windows host is affected by local privilege escalation vulnerability.

Description

The Windows Druva inSync Client Service (inSyncCPHwnet64.exe) contains a path traversal vulnerability that can be exploited by a local, unauthenticated attacker to execute OS commands with SYSTEM privileges. When processing RPC type 5 requests over TCP port 6064, inSyncCPHwnet64.exe does not properly validate request data prior to passing it to the CreateProcessW() function. By sending a crafted RPC request, an attacker can elevate privileges to SYSTEM.

Solution

Upgrade to Druva inSync Client 6.6.4 or later.

See Also

http://www.nessus.org/u?da4e741b

https://www.tenable.com/security/research/tra-2020-34

Plugin Details

Severity: High

ID: 136927

File Name: druva_insync_tra-2020-34.nasl

Version: 1.5

Type: local

Agent: windows

Family: Windows

Published: 5/27/2020

Updated: 12/29/2020

Dependencies: druva_insync_client_win_installed.nbin

Risk Information

CVSS Score Source: CVE-2020-5752

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:F/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:druva:insync_client

Required KB Items: installed_sw/Druva inSync

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/5/2020

Vulnerability Publication Date: 7/5/2020

Exploitable With

Metasploit (Druva inSync inSyncCPHwnet64.exe RPC Type 5 Privilege Escalation)

Reference Information

CVE: CVE-2020-5752