CVE-2021-33880 : What You Need to Know

The CVE-2021-33880 involves the aaugustin websockets library before version 9.1 for Python, which exhibits an Observable Timing Discrepancy vulnerability on servers with enabled HTTP Basic Authentication. This flaw could potentially allow an attacker to guess a password through a timing attack.

Understanding CVE-2021-33880

This section delves into the core details of the CVE-2021-33880 vulnerability.

What is CVE-2021-33880?

The aaugustin websockets library before version 9.1 for Python is susceptible to an Observable Timing Discrepancy vulnerability. This security issue occurs specifically on servers that have HTTP Basic Authentication enabled with basic_auth_protocol_factory(credentials=...), enabling attackers to exploit a timing attack to potentially guess passwords.

The Impact of CVE-2021-33880

The impact of CVE-2021-33880 is significant as it provides attackers with a potential means to carry out password guessing attacks, compromising the security and confidentiality of affected systems.

Technical Details of CVE-2021-33880

This section provides in-depth technical insights into the CVE-2021-33880 vulnerability.

Vulnerability Description

The vulnerability lies in the aaugustin websockets library before version 9.1 for Python, allowing attackers to exploit an Observable Timing Discrepancy when HTTP Basic Authentication is active. Specifically, the flaw arises when using basic_auth_protocol_factory(credentials=...) and can lead to password guessing attacks.

Affected Systems and Versions

The vulnerability affects servers running the aaugustin websockets library versions prior to 9.1 for Python. Systems with HTTP Basic Authentication enabled are particularly at risk.

Exploitation Mechanism

Attackers can exploit the Observable Timing Discrepancy on servers with active HTTP Basic Authentication through basic_auth_protocol_factory(credentials=...). By conducting timing attacks, malicious actors can potentially deduce passwords.

Mitigation and Prevention

In this section, we outline crucial steps to mitigate and prevent exploitation of CVE-2021-33880.

Immediate Steps to Take

Update to version 9.1 or later of the aaugustin websockets library to patch the vulnerability.
Disable HTTP Basic Authentication if not essential for your system's functionality.

Long-Term Security Practices

Implement strong password policies to reduce the risk of successful password guessing attacks.
Regularly monitor for suspicious activities that may indicate exploitation attempts.

Patching and Updates

Stay informed about security alerts and updates for the aaugustin websockets library to promptly address any newly discovered vulnerabilities.