CVE-2021-32999 : Exploit Details and Defense Strategies

A vulnerability has been identified in AVEVA SuiteLink Server that could allow an attacker to exploit improper handling of exceptional conditions. This could result in a high impact on availability.

Understanding CVE-2021-32999

CVE-2021-32999 is a vulnerability in AVEVA SuiteLink Server due to improper handling of exceptional conditions while processing command 0x01.

What is CVE-2021-32999?

The vulnerability involves the improper handling of exceptional conditions in SuiteLink server, which could potentially be exploited by attackers.

The Impact of CVE-2021-32999

The vulnerability has a high impact on availability, as it could be leveraged by malicious actors to disrupt operations.

Technical Details of CVE-2021-32999

CVE-2021-32999 has a CVSS v3.1 base score of 7.5, indicating a high severity issue with a low attack complexity. The vulnerability is network exploitable with no privileges required.

Vulnerability Description

The vulnerability arises from the improper handling of exceptional conditions in SuiteLink server while processing command 0x01.

Affected Systems and Versions

Affected products include AVEVA System Platform 2020, AVEVA InTouch 2020, AVEVA Historian 2020, AVEVA Communication Drivers Pack 2020, AVEVA Batch Management 2020, and AVEVA MES 2014, running specific versions.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely over the network without the need for special privileges.

Mitigation and Prevention

To address CVE-2021-32999, AVEVA recommends organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. Users with affected versions should apply the corresponding security update mentioned in AVEVA security bulletin AVEVA-2021-003.

Immediate Steps to Take

Organizations should prioritize the application of security updates to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing robust security protocols and regularly updating systems can help prevent future vulnerabilities.

Patching and Updates

Ensure that all vulnerable systems are patched promptly with the security updates provided by AVEVA.