CVE-2019-7232 : Vulnerability Insights and Analysis

A buffer overflow vulnerability in the ABB IDAL HTTP server allows attackers to execute arbitrary code on the server by sending a specially crafted Host header.

Understanding CVE-2019-7232

This CVE describes a critical buffer overflow issue in the ABB IDAL HTTP server that can be exploited by attackers to take control of the server.

What is CVE-2019-7232?

The vulnerability arises when a web request includes an excessively long Host header, causing a buffer overflow that enables the attacker to overwrite a Structured Exception Handler (SEH) address. This manipulation allows the attacker to execute malicious code on the server.

The Impact of CVE-2019-7232

Exploiting this vulnerability can lead to severe consequences, including unauthorized code execution on the affected server, potentially compromising sensitive data and system integrity.

Technical Details of CVE-2019-7232

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability in the ABB IDAL HTTP server occurs due to a buffer overflow triggered by a lengthy Host header in a web request. This overflow allows attackers to overwrite the SEH address, leading to code execution.

Affected Systems and Versions

Product: ABB IDAL HTTP server
Vendor: ABB
Versions: All versions are affected

Exploitation Mechanism

By sending a Host header value of 2047 bytes or more, an attacker can overflow the buffer and overwrite the SEH address, gaining the ability to run arbitrary code on the server.

Mitigation and Prevention

Protecting systems from CVE-2019-7232 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches promptly to mitigate the vulnerability.
Implement network-level protections to filter out malicious requests targeting the Host header.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.

Patching and Updates

Stay informed about security advisories and updates from ABB regarding the ABB IDAL HTTP server.
Continuously monitor and assess the server for any signs of unauthorized access or malicious activity.