Trend Micro InterScan Web Security Virtual Appliance (IWSVA) DecryptPasswd Stack-based Buffer Overflow

high Nessus Plugin ID 148336
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: 5.9

Synopsis

The remote host is running an application that is affected by a remote code execution vulnerability.

Description

The Trend Micro InterScan Web Security Virtual Appliance (IWSVA) is affected by a remote code execution vulnerability. A stack-based buffer overflow condition exists in the DecryptPasswd function in libuiauutil.so due to improper validation of user-supplied data before copying it to a fixed-size, stack-based buffer via the strcpy function. An unauthenticated, remote attacker can exploit this, via a specially crafted HTTP message, to cause a denial of service condition or the execution of arbitrary code.

Note that the appliance is reportedly affected by other vulnerabilities; however, this plugin has not tested for those issues.

Solution

Upgrade to the IWSVA version 6.5 build 1919 or later.

See Also

https://success.trendmicro.com/solution/000281954

Plugin Details

Severity: High

ID: 148336

File Name: trendmicro_iwsva_cve-2020-28578.nbin

Version: 1.4

Type: remote

Family: Firewalls

Published: 4/6/2021

Updated: 5/6/2021

Dependencies: trendmicro_iwsva_detect.nbin

Risk Information

Risk Factor: High

VPR Score: 5.9

CVSS Score Source: CVE-2020-28578

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

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

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

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/a:trendmicro:interscan_web_security_virtual_appliance

Required KB Items: installed_sw/Trend Micro IWSVA Web UI

Exploit Ease: No known exploits are available

Patch Publication Date: 11/16/2020

Vulnerability Publication Date: 11/16/2020

Reference Information

CVE: CVE-2020-28578