CVE-2023-26142 : Vulnerability Insights and Analysis

This CVE-2023-26142 pertains to a vulnerability in the package "crow" that allows for HTTP Response Splitting when untrusted user input is utilized to construct header values. This can lead to CRLF Injection in certain functions, potentially enabling malicious content injection.

Understanding CVE-2023-26142

This section delves into the specifics of CVE-2023-26142, its impact, technical details, and mitigation strategies.

What is CVE-2023-26142?

The CVE-2023-26142 vulnerability occurs in all versions of the "crow" package and is related to HTTP Response Splitting. It arises when untrusted user input is incorporated into header values without proper sanitization.

The Impact of CVE-2023-26142

The impact of CVE-2023-26142 is classified as medium severity based on the CVSS v3.1 score. An attacker could potentially manipulate HTTP response headers to inject malicious content, leading to a range of security threats.

Technical Details of CVE-2023-26142

This section outlines the technical aspects of CVE-2023-26142, including the vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in the "crow" package stems from improper sanitization of user input in header values. Attackers can exploit this by injecting malicious content using carriage return line feeds to manipulate HTTP response headers.

Affected Systems and Versions

The "crow" package in all versions is impacted by this vulnerability. Specifically, when untrusted user input is utilized in the set_header and add_header functions, the risk of HTTP Response Splitting arises.

Exploitation Mechanism

By inserting \r\n (carriage return line feeds) characters in the header values, attackers can manipulate the HTTP response headers to introduce malicious content, exploiting the vulnerability in the "crow" package.

Mitigation and Prevention

In response to CVE-2023-26142, it is crucial to implement immediate steps, adopt long-term security practices, and ensure prompt patching and updates to mitigate the risks associated with this vulnerability.

Immediate Steps to Take

To address CVE-2023-26142 promptly, it is essential to sanitize user input in header values, validate all input data, and implement strict input validation mechanisms to prevent HTTP Response Splitting attacks in the "crow" package.

Long-Term Security Practices

Establishing secure coding practices, conducting regular security audits, and educating developers on secure coding principles can help bolster the overall security posture and prevent such vulnerabilities from surfacing in the future.

Patching and Updates

Vendor-provided patches and updates should be applied promptly to address the CVE-2023-26142 vulnerability in the "crow" package. Staying vigilant about security updates and implementing a robust patch management strategy is essential to mitigate potential risks.