CVE-2023-41752 in Traffic Server
Summary
by MITRE • 10/25/2023
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Traffic Server.This issue affects Apache Traffic Server: from 8.0.0 through 8.1.8, from 9.0.0 through 9.2.2.
Users are recommended to upgrade to version 8.1.9 or 9.2.3, which fixes the issue.
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Analysis
by VulDB Data Team • 06/12/2025
The CVE-2023-41752 vulnerability represents a critical exposure of sensitive information to unauthorized actors within Apache Traffic Server, a widely deployed open-source caching proxy server. This vulnerability manifests as an information disclosure flaw that allows malicious entities to access sensitive data that should remain restricted to authorized users only. The affected versions span across two major release lines, specifically from 8.0.0 through 8.1.8 and from 9.0.0 through 9.2.2, indicating a substantial attack surface that impacts organizations relying on these server configurations. The vulnerability's classification as an exposure of sensitive information aligns with CWE-200, which specifically addresses the disclosure of information to unauthorized actors, making it a significant concern for security-conscious organizations. The impact extends beyond simple data leakage as it can potentially expose authentication credentials, session tokens, configuration details, or other sensitive operational data that could be leveraged for further attacks.
The technical implementation of this vulnerability stems from inadequate access controls or improper handling of sensitive data within the traffic server's processing pipeline. When users interact with the affected Apache Traffic Server instances, the system fails to properly restrict access to sensitive information that should be protected from unauthorized access. This flaw likely exists in the server's response handling mechanisms or in how it manages internal data structures containing confidential information. The vulnerability operates at the application layer and can be exploited through normal network traffic patterns, making it particularly dangerous as it requires no special privileges or complex attack vectors. The flaw may be present in how the server processes requests, manages internal state, or handles response generation, potentially exposing internal server details, configuration parameters, or user-related information to external attackers who can access the server through standard network connections.
Organizations operating affected Apache Traffic Server versions face significant operational risks from this vulnerability, as unauthorized access to sensitive information can lead to cascading security incidents. The exposure could enable attackers to gather intelligence about the internal network structure, server configurations, or user authentication mechanisms, which could then be used to launch more sophisticated attacks. This vulnerability directly impacts the principle of least privilege and can compromise the confidentiality aspect of the CIA triad, potentially leading to credential theft, session hijacking, or other advanced persistent threats. The attack surface is particularly concerning given that Apache Traffic Server is commonly deployed in enterprise environments where it serves as a critical component for content delivery and traffic management. Organizations may experience regulatory compliance violations, reputational damage, and potential financial losses if sensitive data is compromised through this vulnerability. The risk is amplified when considering that the affected versions include multiple minor releases, suggesting that the flaw has persisted across several updates, indicating either insufficient security review processes or inadequate patch management procedures within the project.
The recommended remediation involves upgrading to Apache Traffic Server versions 8.1.9 or 9.2.3, which contain the necessary patches to address the information disclosure vulnerability. This upgrade path represents a straightforward mitigation strategy that resolves the underlying flaw in the server's access control mechanisms. Organizations should prioritize this upgrade as an immediate security measure, particularly given the widespread deployment of Apache Traffic Server in production environments. The patch implementation likely addresses the specific code paths that were vulnerable to information disclosure, ensuring that sensitive data is properly protected from unauthorized access. Security teams should also conduct thorough testing of the upgraded environment to ensure that the patch does not introduce compatibility issues with existing configurations or applications. Additionally, organizations should implement monitoring procedures to detect any potential exploitation attempts and should consider conducting security assessments of their traffic server deployments to identify any other potential vulnerabilities that may exist in their infrastructure. The vulnerability's presence across multiple versions underscores the importance of maintaining up-to-date security practices and regular vulnerability assessments as part of comprehensive cybersecurity programs.