CVE-2021-26711 Explained : Impact and Mitigation

A frame-injection issue in the online help in Redwood Report2Web 4.3.4.5 allows remote attackers to render an external resource inside a frame via the help/Online_Help/NetHelp/default.htm turl parameter.

Understanding CVE-2021-26711

This CVE identifies a frame-injection vulnerability in Redwood Report2Web 4.3.4.5, enabling remote attackers to embed an external resource within a frame.

What is CVE-2021-26711?

The CVE-2021-26711 vulnerability pertains to frame injection in the online help feature of Redwood Report2Web 4.3.4.5, facilitating the insertion of external content by malicious actors.

The Impact of CVE-2021-26711

The impact of this vulnerability is significant as it allows remote attackers to manipulate content displayed to users, potentially leading to further exploitation or phishing attacks.

Technical Details of CVE-2021-26711

This section delves into the specifics of the CVE, outlining the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in Redwood Report2Web 4.3.4.5 permits threat actors to embed external resources within a frame through a specific URL parameter, posing a risk of data manipulation or unauthorized content display.

Affected Systems and Versions

Redwood Report2Web 4.3.4.5 is identified as the affected version in this CVE, though details on the impacted systems are unspecified.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by manipulating the turl parameter within the online help feature, allowing them to inject external content into the frame, potentially compromising user interactions.

Mitigation and Prevention

In addressing CVE-2021-26711, immediate actions, long-term security practices, and the importance of prompt patching and updates play a crucial role in safeguarding systems.

Immediate Steps to Take

It is recommended to restrict access to the vulnerable feature, implement robust input validation checks, and employ security mechanisms to mitigate the risk of frame injection attacks.

Long-Term Security Practices

Enhancing overall web application security, conducting regular security assessments, and promoting awareness among users and developers can contribute to a proactive defense against similar vulnerabilities.

Patching and Updates

Regularly installing security patches provided by software vendors, staying informed about security advisories, and promptly updating the affected systems are essential steps to prevent exploitation of known vulnerabilities.