CVE-2023-34396 represents an Allocation of Resources Without Limits or Throttling vulnerability in the Apache Software Foundation's Apache Struts framework. This vulnerability affects versions through 2.5.30 and 6.1.2, allowing attackers to exploit the application effectively.
With a CVSS score of 4.3, classified as medium severity, this vulnerability poses a risk to organizations that utilize Apache Struts. The potential for denial of service due to resource exhaustion is a significant concern, particularly where availability impacts are rated high.
Organizations should prioritize patching immediately. It is essential to upgrade to Struts version 2.5.31 or 6.1.2.1 or greater to mitigate any associated risks.
The vulnerability is not currently listed in the Known Exploited Vulnerability (KEV) catalog, and there are no confirmed public exploits available. However, organizations should remain vigilant.
The publication date of this vulnerability was June 14, 2023, and it has been marked as modified, necessitating ongoing attention to updates from relevant sources.
Vulnerability Details
This vulnerability allows denial of service due to the allocation of resources without limits or throttling. In the affected versions, the application may become unresponsive due to excessive resource consumption.
The CVSS score is 4.3, indicating a medium severity level with a low attack complexity. The attack vector is network-based, and low privileges are required to exploit this vulnerability. There is no user interaction required.
The vulnerability affects Apache Struts versions through 2.5.30 and 6.1.2. The recommended action is to upgrade to Struts version 2.5.31 or 6.1.2.1 or later.
Technical Analysis
The root cause of this vulnerability stems from a lack of resource management within the application, which allows for excessive resource allocation without any imposed limits. This flaw can lead to a denial of service, where the application becomes unable to process legitimate requests.
The attack vector is network-based, meaning that an attacker can exploit this vulnerability remotely. The attack complexity is rated as low, indicating that it can be executed easily without specialized knowledge. Low privileges are required to perform the attack, and no user interaction is necessary.
The impact on availability is high, as the application can be rendered non-functional, while confidentiality and integrity are not affected.
Risk & Impact Analysis
Risk to organizations includes potential downtime and service disruption. The nature of the denial of service risk means that attackers could exploit this vulnerability to degrade the performance of affected applications, leading to loss of availability.
Organizations utilizing Apache Struts should assess their exposure to this vulnerability and prioritize remediation efforts. The potential blast radius can impact any service reliant on Apache Struts, making it critical to address this issue promptly.
Given the CVSS score of 4.3, organizations should address this vulnerability in their priority patch cycle. With the absence of public exploits or known exploitation scenarios, the risk level remains manageable but requires vigilance.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of Apache Struts are: through 2.5.30 and through 6.1.2. Organizations should upgrade to Struts 2.5.31 or 6.1.2.1 or greater to mitigate risks.
Mitigation & Remediation
To mitigate the risks associated with CVE-2023-34396, organizations should implement the following actions:
1. Upgrade to Struts version 2.5.31 or 6.1.2.1 or greater.
2. Implement network controls to limit access to the application.
3. Monitor application performance for signs of abnormal resource usage.
4. Conduct regular security assessments, including penetration testing, to identify and address vulnerabilities.
Organizations should validate remediation through penetration testing to identify similar weaknesses.
Detection Guidance
Organizations should monitor for the following indicators to detect potential exploitation of this vulnerability:
1. Unusual spikes in resource usage on servers running Apache Struts.
2. Logs indicating repeated failed requests or excessive form submissions.
3. Behavioral anomalies in application response times.
4. Network signatures indicating potential denial of service attempts.
AppSecure Threat Intelligence Insight
CVE-2023-34396 serves as a reminder of the importance of robust resource management in application security. Its presence highlights the need for organizations to continuously evaluate their application architectures for limitations that could lead to denial of service.
With the evolving threat landscape, organizations must adapt their security strategies to mitigate risks associated with vulnerabilities like this. Regular assessments and proactive measures are essential.
For more information on application security best practices, organizations can refer to the following resources:
Vulnerability management program design, penetration testing methodology, and cloud security assessment are recommended for further understanding and enhancement of security postures.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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