CVE-2021-27232 : Vulnerability Insights and Analysis

This CVE-2021-27232 involves a stack-based buffer overflow in the RTSPLive555.dll ActiveX control of Pelco Digital Sentry Server 7.18.72.11464, posing a threat of arbitrary code execution by a remote attacker. The vulnerability can be triggered by visiting a malicious webpage using Internet Explorer.

Understanding CVE-2021-27232

This section provides insight into the nature and impact of the CVE-2021-27232 vulnerability.

What is CVE-2021-27232?

The RTSPLive555.dll ActiveX control in Pelco Digital Sentry Server 7.18.72.11464 is susceptible to a stack-based buffer overflow, which allows a remote attacker to potentially execute arbitrary code by exploiting the vulnerability through a malicious webpage on Internet Explorer.

The Impact of CVE-2021-27232

The exploitation of CVE-2021-27232 could lead to a remote attacker executing attacker-supplied code on the victim's system, posing a serious security risk to the affected users.

Technical Details of CVE-2021-27232

This section delves into the technical aspects of the vulnerability, including the description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises due to a stack-based buffer overflow in the RTSPLive555.dll ActiveX control of Pelco Digital Sentry Server 7.18.72.11464, enabling remote attackers to inject and execute arbitrary code.

Affected Systems and Versions

Pelco Digital Sentry Server 7.18.72.11464 is specifically impacted by this vulnerability, potentially exposing users of this version to exploitation.

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker through the utilization of a malicious webpage designed to trigger the stack-based buffer overflow when accessed using Internet Explorer.

Mitigation and Prevention

In this section, mitigation strategies and preventive measures to address CVE-2021-27232 are discussed.

Immediate Steps to Take

Users are advised to avoid visiting unknown or suspicious websites using Internet Explorer to minimize the risk of exploitation.
Employ alternative browsers until the vulnerability is patched to reduce exposure to potential attacks.

Long-Term Security Practices

Regularly update and patch the Pelco Digital Sentry Server software to address security vulnerabilities and protect against potential threats.
Implement network security measures and restrict access to potentially vulnerable components to enhance overall system security.

Patching and Updates

Stay informed about security advisories and updates released by Pelco to promptly apply patches addressing CVE-2021-27232 and other vulnerabilities.
Maintain a proactive stance towards cybersecurity by ensuring systems are up-to-date with the latest security patches and software versions.