CVE-2022-27631 Explained : Impact and Mitigation

A memory corruption vulnerability has been discovered in the httpd unescape functionality of DD-WRT Revision 32270 - Revision 48599, which could allow an attacker to trigger memory corruption through a specially-crafted HTTP request.

Understanding CVE-2022-27631

This section delves into the details of the CVE-2022-27631 vulnerability.

What is CVE-2022-27631?

CVE-2022-27631 is a memory corruption vulnerability found in the httpd unescape functionality of DD-WRT Revision 32270 - Revision 48599.

The Impact of CVE-2022-27631

The vulnerability could be exploited by an attacker sending a network request, leading to memory corruption.

Technical Details of CVE-2022-27631

In this section, we will explore the technical aspects of CVE-2022-27631.

Vulnerability Description

The memory corruption vulnerability in the httpd unescape functionality of DD-WRT could result in an out-of-bounds write (CWE-787).

Affected Systems and Versions

The vulnerability affects DD-WRT Revision 32270 - Revision 48599.

Exploitation Mechanism

By sending a specially-crafted HTTP request, an attacker can trigger memory corruption in the affected systems.

Mitigation and Prevention

This section discusses the actions to mitigate and prevent exploitation of CVE-2022-27631.

Immediate Steps to Take

Users are advised to apply security patches provided by DD-WRT to address the vulnerability.

Long-Term Security Practices

Implementing network segmentation and access controls can help reduce the risk of network-based attacks.

Patching and Updates

Regularly update and patch the DD-WRT firmware to protect against known vulnerabilities.