CVE-2021-28801 Explained : Impact and Mitigation

An out-of-bounds read vulnerability in QSS versions prior to 1.0.2 build 20210122 on QNAP switches QSW-M2108-2C, QSW-M2108-2S, and QSW-M2108R-2C allows attackers to access sensitive information. QNAP Systems Inc. has provided fixes for this vulnerability.

Understanding CVE-2021-28801

This CVE identifies an out-of-bounds read vulnerability affecting QNAP switches running QSS versions prior to 1.0.2 build 20210122.

What is CVE-2021-28801?

CVE-2021-28801 is an out-of-bounds read vulnerability reported in specific QNAP switches that could be exploited to access confidential data on the affected system.

The Impact of CVE-2021-28801

The vulnerability allows threat actors to perform unauthorized reading of sensitive information, potentially leading to a breach of privacy and security.

Technical Details of CVE-2021-28801

This section outlines the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability enables attackers to read beyond the bounds of allocated memory, accessing data that should be restricted.

Affected Systems and Versions

QSS: Versions prior to 1.0.2 build 20210122
Platforms: QSW-M2108-2C, QSW-M2108-2S, QSW-M2108R-2C

Exploitation Mechanism

Attackers can exploit this vulnerability to gain unauthorized access to sensitive information stored on the impacted QNAP switches.

Mitigation and Prevention

Here are some steps to mitigate and prevent the exploitation of CVE-2021-28801.

Immediate Steps to Take

Update to the patched versions provided by QNAP Systems Inc.

Long-Term Security Practices

Regularly apply security updates and patches to prevent known vulnerabilities.

Patching and Updates

Make sure to install the following fixed versions:

QSW-M2108-2C: QSS 1.0.2 build 20210122 and later
QSW-M2108-2S: QSS 1.0.2 build 20210122 and later
QSW-M2108R-2C: QSS 1.0.2 build 20210122 and later