Trend Micro IWSVA 6.5 < 6.5 Build 1919 Multiple Vulnerabilities

critical Nessus Plugin ID 144585
New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it is different from CVSS.

VPR Score: 6.7


The remote host is affected by multiple vulnerabilities.


The version of Trend Micro InterScan Web Security Virtual Appliance (IWSVA) installed on the remote host is 6.5 prior to 6.5 Build 1919. It is, therefore, affected by multiple vulnerabilities:

- Multiple cross-site scripting (XSS) vulnerabilities exist in the web interface of IWSVA due to improper validation of user-supplied input before returning it to users. An unauthenticated, remote attacker can exploit these, by convincing a user to click a specially crafted URL, to execute arbitrary script code in a user's browser session. (CVE-2020-8462, CVE-2020-27010)

- An authentication bypass vulnerability exists in IWSVA due to insufficient request validation. An unauthenticated, remote attacker can exploit this, by sending specially crafted requests, to bypass authentication and execute arbitrary actions with increased privileges. (CVE-2020-8463)

- Multiple remote code execution vulnerabilities exist in IWSVA. An unauthenticated, remote attacker can exploit these to bypass authentication and execute arbitrary commands. (CVE-2020-8465, CVE-2020-8466) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version


Upgrade to Trend Micro IWSVA version 6.5 Build 1919 or later. Alternatively, apply the mitigating factors outlined in the vendor advisory.

See Also

Plugin Details

Severity: Critical

ID: 144585

File Name: trendmicro_iwsva_6_5_1919.nasl

Version: 1.2

Type: local

Family: Firewalls

Published: 12/23/2020

Updated: 12/24/2020

Dependencies: trendmicro_iwsva_version.nbin

Risk Information

Risk Factor: Critical

VPR Score: 6.7

CVSS Score Source: CVE-2020-8465

CVSS v2.0

Base Score: 10

Temporal Score: 7.8

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

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

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/a:trendmicro:interscan_web_security_virtual_appliance

Required KB Items: Host/TrendMicro/IWSVA/version, Host/TrendMicro/IWSVA/build

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/17/2020

Vulnerability Publication Date: 12/17/2020

Reference Information

CVE: CVE-2020-8461, CVE-2020-8462, CVE-2020-8463, CVE-2020-8464, CVE-2020-8465, CVE-2020-8466, CVE-2020-27010