CVE-2023-26112 : Vulnerability Insights and Analysis

This CVE-2023-26112 is a published vulnerability that affects all versions of the package configobj. It is related to Regular Expression Denial of Service (ReDoS) and has a low base severity score of 3.7 according to the CVSS v3.1 metrics. The vulnerability was discovered and reported by DarkTinia under the Snyk organization.

Understanding CVE-2023-26112

The CVE-2023-26112 vulnerability in configobj package poses a threat due to Regular Expression Denial of Service (ReDoS). It can lead to a low impact in terms of availability but should be addressed to prevent any potential exploitation.

What is CVE-2023-26112?

CVE-2023-26112 is a vulnerability found in all versions of the configobj package. It allows for Regular Expression Denial of Service (ReDoS) through the validate function using a specific pattern. It is important to note that this vulnerability is only exploitable when a developer places the problematic value in a server-side configuration file.

The Impact of CVE-2023-26112

The impact of CVE-2023-26112 is rated as low in terms of severity, with a base score of 3.7 according to CVSS v3.1 metrics. Although the impact on confidentiality and integrity is minimal, it can affect the availability of the system to some extent.

Technical Details of CVE-2023-26112

The following technical details provide more insight into the vulnerability and its implications:

Vulnerability Description

The vulnerability in configobj package arises from Regular Expression Denial of Service (ReDoS) when utilizing the validate function with a specific pattern. This can lead to potential exploitation if the malicious value is included in a server-side configuration file.

Affected Systems and Versions

All versions of the configobj package are affected by CVE-2023-26112. This includes version 0 and any versions prior to the fix.

Exploitation Mechanism

The vulnerability can be exploited by a threat actor by leveraging the Regular Expression Denial of Service (ReDoS) issue present in the validate function of the configobj package. The exploitation requires inserting a specific malicious value into a server-side configuration file.

Mitigation and Prevention

To address and mitigate the CVE-2023-26112 vulnerability, consider the following steps:

Immediate Steps to Take

Update to the latest version: Ensure that you are running the latest version of the configobj package that includes a fix for the ReDoS vulnerability.
Validate user input: Implement input validation mechanisms to prevent the inclusion of malicious patterns that could trigger ReDoS.

Long-Term Security Practices

Security training: Provide security awareness training to developers to educate them about potential vulnerabilities like ReDoS.
Code reviews: Conduct regular code reviews to identify and address vulnerable code snippets.
Monitor for anomalies: Implement monitoring and logging mechanisms to detect any unusual behavior that could indicate an exploitation attempt.

Patching and Updates

Stay informed about security updates and patches released by the configobj package maintainers. Regularly apply patches to ensure that your systems are protected against known vulnerabilities like CVE-2023-26112.