SB2021100609 - Multiple vulnerabilities in Emerson WirelessHART Gateway

Description

This security bulletin contains information about 6 secuirty vulnerabilities.

1) Deserialization of Untrusted Data (CVE-ID: CVE-2021-22439)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Missing Authentication for Critical Function (CVE-ID: CVE-2021-85337)

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to a missing permission validation on system backup restore. A remote authenticated attacker can take over account and change settings.

3) Input validation error (CVE-ID: CVE-2021-03554)

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input in the restore file. A remote authenticated attacker can pass specially crafted input to the application and execute arbitrary code on the target system.

4) Path traversal (CVE-ID: CVE-2021-24769)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.

5) OS Command Injection (CVE-ID: CVE-2021-81019)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation within the passphrase. A remote authenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

6) Information disclosure (CVE-ID: CVE-2021-10073)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote authenticated attacker can gain unauthorized access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://ics-cert.us-cert.gov/advisories/icsa-21-278-02