CVE-2021-33880 is a medium-severity vulnerability identified in the aaugustin websockets library before version 9.1 for Python. This vulnerability allows an observable timing discrepancy on servers when HTTP Basic Authentication is enabled with the basic_auth_protocol_factory(credentials=...). An attacker may be able to guess a password via a timing attack, exploiting the discrepancies that arise during authentication.
The CVSS score for this vulnerability is 5.9, which classifies it as medium severity. The attack vector is network-based, with high complexity, meaning attackers require a specific skill level to exploit the vulnerability effectively. This is a concern for organizations that rely on this library for web socket communications, as it may expose sensitive data.
Risk to organizations includes unauthorized access to sensitive information, particularly if the vulnerable library is used in authentication processes. Given the nature of the timing attack, an attacker could potentially gather enough information to compromise user accounts, leading to further attacks or data breaches.
Organizations should prioritize patching immediately. The affected library versions need to be updated to mitigate this vulnerability effectively.
The vulnerability was published on June 6, 2021, and remains a concern for users of the affected libraries. It is crucial for security teams to assess the impact of this vulnerability on their systems and implement the necessary updates.
Vulnerability Details
The aaugustin websockets library for Python is a widely used component for handling web socket communications. The vulnerability arises from an observable timing discrepancy that affects how authentication processes handle timing. Specifically, when HTTP Basic Authentication is enabled, the timing of responses can reveal information about the validity of user credentials.
The vulnerability is classified under CWE-203, which relates to information exposure through an observable timing discrepancy. This classification highlights the risks associated with improper handling of timing in authentication mechanisms.
The CVSS v3.1 score of 5.9 reflects a medium severity level, indicating a moderate risk that requires attention. The attack vector is network-based, with high complexity, meaning that while exploitation is possible, it may require sophisticated techniques to achieve.
Affected versions include all prior to 9.1 of the aaugustin websockets library. Security patches have been released to address this vulnerability, and it is critical that organizations utilizing this library apply these updates without delay.
Technical Analysis
The root cause of CVE-2021-33880 stems from an observable timing discrepancy in how the library handles authentication. The attack vector is network-based, allowing attackers to exploit the vulnerability remotely without needing physical access to the system.
The attack complexity is rated high, which means that an attacker needs to carefully craft their requests and analyze the timing responses to effectively exploit the vulnerability. Importantly, no privileges are required for this attack, and user interaction is not necessary, making it easier for attackers to attempt to exploit this vulnerability.
The impact on confidentiality is classified as high, meaning successful exploitation could lead to unauthorized access to sensitive data. However, the integrity and availability impacts are rated as none, indicating that the attack does not compromise the data integrity or system availability.
Risk & Impact Analysis
Organizations using the affected versions of the aaugustin websockets library should be aware of the risks associated with this vulnerability. The ability to guess passwords via a timing attack represents a significant threat to user accounts and sensitive data.
The risk to organizations includes potential unauthorized access to accounts, which could lead to further attacks, data breaches, and compliance issues. Given the medium severity score, it is imperative that security teams assess their exposure to this vulnerability and take action.
The blast radius could be extensive if exploited, as it could allow attackers to gain access to user accounts across various systems utilizing this library. Organizations should schedule remediation as part of their immediate security measures.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of the aaugustin websockets library include all versions prior to 9.1. Additionally, several Oracle components are affected: communications_cloud_native_core_policy (1.14.0), communications_cloud_native_core_security_edge_protection_proxy (1.5.0), communications_cloud_native_core_service_communication_proxy (1.14.0), and communications_cloud_native_core_unified_data_repository (1.14.0). Organizations should verify their usage of these components.
Mitigation & Remediation
Organizations should apply the latest patches to the aaugustin websockets library to mitigate this vulnerability. The patched version is 9.1 or later, which addresses the timing discrepancy in authentication.
If immediate patching is not feasible, consider implementing alternative authentication mechanisms that do not rely on HTTP Basic Authentication or utilize additional layers of security to protect sensitive information during the authentication process.
Monitoring and logging should be enhanced to detect any unusual login attempts or patterns that could indicate an ongoing attack. Regular security assessments can help identify and mitigate vulnerabilities proactively.
For detailed security guidance, organizations may refer to resources on penetration testing and ongoing security assessments.
Detection Guidance
To detect potential exploitation attempts related to CVE-2021-33880, organizations should monitor logs for abnormal authentication patterns, especially those involving HTTP Basic Authentication. Look for discrepancies in response times that could indicate a timing attack.
Behavioral anomalies, such as repeated failed login attempts from the same IP address or unusual patterns of authentication requests, should also be flagged for further investigation.
AppSecure Threat Intelligence Insight
CVE-2021-33880 highlights the critical importance of secure coding practices, particularly in authentication mechanisms. The observable timing discrepancy serves as a reminder for developers to consider all aspects of security, including response times in their applications.
As organizations increasingly rely on web-based applications, the significance of vulnerabilities like this one cannot be overlooked. The potential for attackers to exploit timing discrepancies underscores the need for robust security measures across all layers of an application's architecture.
For organizations seeking to enhance their security posture, resources such as the penetration testing methodology can provide valuable insights into identifying and mitigating vulnerabilities.
Additionally, organizations should consider adopting a comprehensive security framework that includes regular assessments, employee training, and incident response planning. This proactive approach can significantly reduce the risk associated with vulnerabilities like CVE-2021-33880.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)