SB2021082003 - Multiple vulnerabilities in AVEVA SuiteLink Server

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Heap-based buffer overflow (CVE-ID: CVE-2021-32959)

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

The vulnerability exists due to a boundary error in SuiteLink server while processing commands 0x05/0x06. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

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

2) NULL pointer dereference (CVE-ID: CVE-2021-32979)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in SuiteLink server while processing commands 0x04/0x0a. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

3) NULL pointer dereference (CVE-ID: CVE-2021-32971)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in SuiteLink server while processing command 0x07. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

4) NULL pointer dereference (CVE-ID: CVE-2021-32987)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in SuiteLink server while processing command 0x0b. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

5) Improper Handling of Exceptional Conditions (CVE-ID: CVE-2021-32999)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of exceptional conditions in SuiteLink server while processing command 0x01. A remote attacker can cause a denial of service condition on the target system.

Remediation

Install update from vendor's website.

References

• https://ics-cert.us-cert.gov/advisories/icsa-21-231-01
• https://www.aveva.com/content/dam/aveva/documents/support/cyber-security-updates/SecurityBulletin_AV...