Multiple vulnerabilities in Trend Micro HouseCall for Home Networks

Published: 2021-04-26 | Updated: 2021-09-16

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-28649 CVE-2021-31519
CWE-ID	CWE-266
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	HouseCall for Home Networks Server applications / SCADA systems
Vendor	Trend Micro

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect Privilege Assignment

EUVDB-ID: #VU52589

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28649

CWE-ID: CWE-266 - Incorrect Privilege Assignment

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect permissions set on product folders created by the installer, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HouseCall for Home Networks: 5.3.1045 - 5.3.1179

External links

http://www.zerodayinitiative.com/advisories/ZDI-21-474/
http://helpcenter.trendmicro.com/en-us/article/TMKA-10310

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Incorrect Privilege Assignment

EUVDB-ID: #VU52590