Kaseya VSA < 9.3.0.35 / 9.4 < 9.4.0.36 / 9.5 < 9.5.0.5 RCE

critical Nessus Plugin ID 160888

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Synopsis

The Kaseya VSA instance installed on the remote host is affected by a remote code execution vulnerability.

Description

The version of Kaseya VSA installed on the remote host is affected by a remote code execution vulnerability. Kaseya VSA RMM before R9.3 9.3.0.35, R9.4 before 9.4.0.36, and R9.5 before 9.5.0.5 allows unprivileged remote attackers to execute PowerShell payloads on all managed devices. In January 2018, attackers actively exploited this vulnerability in the wild.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update to Kaseya VSA version 9.3.0.35, 9.4.0.36, 9.5.0.5, or later.

Plugin Details

Severity: Critical

ID: 160888

File Name: kaseya_9_5_0_5.nasl

Version: 1.4

Type: remote

Family: Misc.

Published: 5/10/2022

Updated: 4/25/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2018-20753

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:kaseya:virtual_system_administrator, cpe:/a:kaseya:vsa

Required KB Items: installed_sw/Kaseya Virtual System Administrator

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/16/2018

Vulnerability Publication Date: 1/28/2018

CISA Known Exploited Vulnerability Due Dates: 5/4/2022

Reference Information

CVE: CVE-2018-20753

Detections

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