CVE-2024-21733 represents a medium-severity vulnerability in Apache Tomcat, classified as a generation of error message containing sensitive information. This vulnerability affects versions of Apache Tomcat from 8.5.7 through 8.5.63 and from 9.0.0-M11 through 9.0.43. Organizations using these versions are at risk of exposing sensitive information through error messages, which could aid malicious actors in crafting further attacks.
The CVSS score for this vulnerability is 5.3, indicating a medium severity level. The score signifies that while the vulnerability may not be critical, it still represents a substantial risk to organizations that rely on affected versions of Tomcat. Timely remediation is essential to mitigate potential data leaks.
The urgency for defenders is underscored by the exploitability of this vulnerability. Currently, there is confirmed exploit availability, which heightens the need for immediate action. Organizations must prioritize patching to prevent unauthorized access to sensitive data and protect their systems.
In light of these factors, organizations are recommended to upgrade to Apache Tomcat version 8.5.64 or 9.0.44 and onwards, which include fixes addressing this vulnerability. Ignoring this advisory could lead to severe consequences, including unauthorized data exposure.
Vulnerability Details
The vulnerability described in CVE-2024-21733 is categorized under CWE-209, indicating an issue with the generation of error messages that might disclose sensitive information. The affected products are specifically Apache Tomcat versions ranging from 8.5.7 to 8.5.63 and from 9.0.0-M11 to 9.0.43. The vulnerability was first published on January 19, 2024.
Technical Analysis
The root cause of this vulnerability stems from the improper handling of error messages within Apache Tomcat, which may inadvertently leak sensitive information during error reporting. The attack vector is identified as network-based, making it accessible to any remote attacker who can trigger the error messages.
The attack complexity is classified as low, meaning that an attacker does not require significant skills or resources to exploit this vulnerability. Furthermore, no privileges are required to exploit this issue, and user interaction is not necessary, allowing for a straightforward attack.
Regarding confidentiality, there is a low impact, meaning that sensitive information could potentially be exposed without compromising the integrity or availability of the system. Organizations running vulnerable versions of Apache Tomcat should take this risk seriously and implement mitigation strategies as soon as possible.
Risk & Impact Analysis
Risk to organizations includes potential exposure of sensitive data through error messages generated by Apache Tomcat. Given the ease of exploitation and the lack of required privileges for attackers, the vulnerability poses a significant risk to any organization using affected versions. The potential blast radius could affect all users of the system, leading to unauthorized access or further attacks.
Organizations should assess their deployment of Apache Tomcat to identify any vulnerable versions and prioritize patching. The CVSS score indicates that this vulnerability should be scheduled for remediation in the next patch cycle, highlighting the importance of addressing this issue promptly.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Affected versions include Apache Tomcat from 8.5.7 through 8.5.63 and from 9.0.0-M11 through 9.0.43. Users should upgrade to version 8.5.64 or 9.0.44 and onwards to mitigate the vulnerability.
Mitigation & Remediation
Organizations should prioritize upgrading to Apache Tomcat version 8.5.64 or 9.0.44 or newer. If immediate upgrading is not possible, organizations should implement configuration hardening to limit exposure and monitor error messages closely for any sensitive information leaks. Additionally, network controls should be enforced to restrict access to the application.
For ongoing security, organizations can leverage continuous penetration testing to validate that all security patches are effective and that no sensitive information is being exposed through error messages.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor log files for unusual patterns that may indicate error message leaks. Specific indicators to look for include the presence of sensitive information in error responses and unexpected error message generation.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of secure error handling within web applications. Organizations must recognize that even seemingly benign error messages can expose critical information to attackers. The trend towards exploiting such vulnerabilities indicates a need for robust error management practices.
Security teams are advised to adopt a proactive approach to vulnerability management, which includes regular assessments and updates to their dependencies. For further information on best practices, organizations can refer to the following resources: penetration testing methodology, vulnerability management program design, and security testing best practices to ensure comprehensive security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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