CVE-2019-3999 : Improper neutralization of special elements used in an OS command in Druva inSyn

Improper neutralization of special elements used in an OS command in Druva inSync Windows Client 6.5.0 allows a local, unauthenticated attacker to execute arbitrary operating system commands with SYSTEM privileges.

Published 2020-02-25 19:15:12

Updated 2022-01-01 19:30:20

Source Tenable Network Security, Inc.

View at NVD, CVE.org

Products affected by CVE-2019-3999

Druva » Insync Client » Version: 6.5.0
cpe:2.3:a:druva:insync_client:6.5.0:*:*:*:*:*:*:*
Matching versions
When used together with: Microsoft » Windows » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2019-3999

EPSS FAQ

12.14%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 93 %

Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2019-3999

Druva inSync inSyncCPHwnet64.exe RPC Type 5 Privilege Escalation

Disclosure Date: 2020-02-25

First seen: 2020-05-14

exploit/windows/local/druva_insync_insynccphwnet64_rcp_type_5_priv_esc

Druva inSync client for Windows exposes a network service on TCP port 6064 on the local network interface. inSync versions 6.6.3 and prior do not properly validate user-supplied program paths in RPC type 5 messages, allowing execution of arbitrary com

More information

CVSS scores for CVE-2019-3999

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.2	HIGH	AV:L/AC:L/Au:N/C:C/I:C/A:C	3.9	10.0	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2019-3999

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-3999

http://packetstormsecurity.com/files/157493/Druva-inSync-Windows-Client-6.5.2-Privilege-Escalation.html

Druva inSync Windows Client 6.5.2 Privilege Escalation ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
http://packetstormsecurity.com/files/157680/Druva-inSync-inSyncCPHwnet64.exe-RPC-Type-5-Privilege-Escalation.html

Druva inSync inSyncCPHwnet64.exe RPC Type 5 Privilege Escalation ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
https://www.tenable.com/security/research/tra-2020-12

Druva inSync Client Multiple Vulnerabilities - Research Advisory | Tenable®
Exploit;Third Party Advisory

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