CVE-2023-26108 : Security Advisory and Response

This CVE record was assigned by "snyk" and published on March 6, 2023. It has a base score of 3.7, indicating a low severity level.

Understanding CVE-2023-26108

This CVE pertains to a vulnerability found in versions of the package @nestjs/core before 9.0.5 that allows for Information Exposure via the StreamableFile pipe. Exploitation of this vulnerability occurs when a client cancels a request while streaming a StreamableFile, which keeps the stream wrapped by the StreamableFile open.

What is CVE-2023-26108?

The CVE-2023-26108 relates to an Information Exposure vulnerability in @nestjs/core versions prior to 9.0.5. This vulnerability enables unauthorized access to sensitive information due to the improper handling of streaming requests.

The Impact of CVE-2023-26108

The impact of this vulnerability is rated as low, with the potential for unauthorized exposure of sensitive data. Although the severity is low, it is essential to address this issue promptly to prevent any exploitation.

Technical Details of CVE-2023-26108

This section delves into the specifics of the vulnerability, including its description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in @nestjs/core allows for Information Exposure through the StreamableFile pipe. When a client interrupts a request while streaming a StreamableFile, the underlying stream remains open, potentially leading to unauthorized access to sensitive data.

Affected Systems and Versions

The affected product is "@nestjs/core," with versions less than 9.0.5 being vulnerable to this CVE. It is crucial for users running versions prior to 9.0.5 to take immediate action to mitigate this risk.

Exploitation Mechanism

Exploiting CVE-2023-26108 involves manipulating the streaming behavior of a StreamableFile in @nestjs/core versions before 9.0.5. By canceling a request during streaming, an attacker could gain unauthorized access to information being processed.

Mitigation and Prevention

In response to CVE-2023-26108, it is imperative to implement immediate steps for remediation, as well as adopt long-term security practices to prevent similar vulnerabilities in the future.

Immediate Steps to Take

Users of affected versions should upgrade to @nestjs/core version 9.0.5 or later to mitigate the Information Exposure vulnerability. Additionally, monitoring for any unauthorized access to sensitive data is advisable.

Long-Term Security Practices

To enhance overall security posture, organizations should prioritize secure coding practices, conduct regular security audits, and stay informed about security updates for their software dependencies.

Patching and Updates

Staying up-to-date with patches and security updates is crucial to addressing vulnerabilities effectively. Regularly monitoring vendor announcements and applying patches promptly can help prevent exploitation of known security flaws.