CVE-2023-45813 : Security Advisory and Response

A detailed overview of CVE-2023-45813 focusing on the inefficient regular expression complexity in TorBot.

Understanding CVE-2023-45813

An explanation of the vulnerability in TorBot related to inefficient regular expression complexity.

What is CVE-2023-45813?

CVE-2023-45813 involves an inefficient regular expression complexity in TorBot, where a specific regular expression allows an attacker to crash the application through a crafted argument.

The Impact of CVE-2023-45813

The vulnerability can be exploited to perform a Denial of Service attack on the system, leading to potential service disruption.

Technical Details of CVE-2023-45813

Insight into the vulnerability specifics, affected systems, and the exploitation mechanism.

Vulnerability Description

In affected versions of TorBot, the

torbot.modules.validators.validate_link

function utilizes a URL validation regex with exponential complexity, enabling attackers to crash the application through a well-crafted argument.

Affected Systems and Versions

The vulnerability impacts DedSecInside's TorBot versions prior to 4.0.0, making them susceptible to exploitation.

Exploitation Mechanism

Attackers can exploit the vulnerability by leveraging a carefully crafted URL argument to trigger a Denial of Service on the targeted system.

Mitigation and Prevention

Guidelines on addressing and preventing the CVE-2023-45813 vulnerability in TorBot.

Immediate Steps to Take

Users are strongly advised to upgrade TorBot to version 4.0.0 or later, as the validators file with the vulnerability has been removed in this release.

Long-Term Security Practices

Implement regular security updates, conduct security audits, and follow secure coding practices to mitigate the risk of similar vulnerabilities in the future.

Patching and Updates

Stay vigilant for security advisories and updates from DedSecInside for any new releases or patches addressing CVE-2023-45813.