SB2021052509 - Multiple vulnerabilities in Trend Micro Home Network Security

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Stack-based buffer overflow (CVE-ID: CVE-2021-32458)

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

The vulnerability exists due to a boundary error in the tdts.ko chrdev_ioctl_handle. A local user can perform a specially crafted IOCTL call to trigger stack-based buffer overflow and execute arbitrary code on the system with elevated privileges.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-32457)

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

The vulnerability exists due to improperly imposed permissions in the tdts.ko chrdev_ioctl_handle functionality. A local user can make a specially crafted IOCTL request and gain elevated privileges on the system.

3) Use of Hard-coded Password (CVE-ID: CVE-2021-32459)

The vulnerability allows a remote attacker to compromise the affected device.

The vulnerability exists due to presence of hard-coded credentials diamond:bahV6AtJqZt4K in the SFTP Log Collection Server feature and are present in the core binary of the HNS device. A remote non-authenticated attacker can login to the affected system and gain access to the sever.

Remediation

Install update from vendor's website.

References

• https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1231
• https://helpcenter.trendmicro.com/en-us/article/TMKA-10337
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1230
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1241