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CVE-2023-34478: Critical Vulnerability in Apache Shiro

Apache Shiro has a critical vulnerability that can lead to authentication bypass due to path traversal. Organizations must patch immediately to mitigate risks associated with this flaw.

CRITICALPublic ExploitCVSS 9.8 · Published July 24, 2023

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The vulnerability identified as CVE-2023-34478 affects Apache Shiro, a widely used security framework for Java applications. Versions prior to 1.12.0 and 2.0.0-alpha-3 are susceptible to this critical flaw, which enables a path traversal attack potentially leading to authentication bypass. This vulnerability poses a significant risk to organizations leveraging Shiro in their applications, particularly those integrating with APIs or web frameworks that route requests based on non-normalized input.

With a CVSS score of 9.8, this vulnerability is classified as critical due to its high severity, which indicates that attackers can exploit it with low effort and without the need for privileges or user interaction. The potential impact includes unauthorized access to sensitive data, making it imperative for organizations to take immediate action.

As per the latest intelligence, this vulnerability is not currently included in the Known Exploited Vulnerabilities (KEV) catalog, which means there is no public evidence of active exploitation at this time. However, given the critical nature of the vulnerability, organizations should prioritize patching immediately.

Mitigation steps include updating to Apache Shiro version 1.12.0 or later, or 2.0.0-alpha-3 or later. Organizations are urged to deploy these updates to protect their systems from potential threats.

Vulnerability Details

CVE-2023-34478 was published on July 24, 2023. The vulnerability allows attackers to exploit path traversal conditions when Shiro interacts with APIs or web frameworks that improperly handle request normalization. The issue is classified under CWE-22, which relates to improper limitation of a pathname to a restricted directory.

The CVSS v3.1 score of 9.8 indicates critical severity, primarily due to the high impacts on confidentiality, integrity, and availability, as well as the low attack complexity and no required privileges. All versions of Apache Shiro prior to the mitigation versions are affected.

Technical Analysis

The root cause of CVE-2023-34478 stems from the inadequate validation of input paths, allowing crafted requests to traverse directories, bypassing authentication mechanisms. The attack vector is network-based, requiring no privileges or user interaction for exploitation, which significantly increases the risk profile.

Exploitation of this vulnerability could lead to unauthorized access to sensitive information, with potential impacts on confidentiality, integrity, and availability of the affected systems.

Risk & Impact Analysis

Organizations utilizing Apache Shiro should assess their risk exposure, particularly if they operate in environments where the framework is integrated with APIs or other web applications. The potential for a path traversal attack leading to authentication bypass raises serious concerns for data protection and compliance obligations.

Given the critical CVSS score and the implications of unauthorized access, organizations must take immediate action. The absence of known exploitation does not mitigate the urgency to patch, as the nature of this vulnerability leaves systems open to swift compromise.

Signal

Status

Known Exploit

Yes

Public PoC

Yes

Actively Exploited

No

Ransomware Use

No

Affected Versions

All versions of Apache Shiro prior to 1.12.0 and 2.0.0-alpha-3 are affected by this vulnerability. Organizations should ensure their systems are updated to these patched versions.

Mitigation & Remediation

To mitigate the risks associated with CVE-2023-34478, organizations should update to Apache Shiro versions 1.12.0 or later, or 2.0.0-alpha-3 or later. For those unable to apply updates immediately, configuration hardening and additional network controls can help reduce exposure.

For further assistance, organizations may consider engaging with a professional service. Our penetration testing service can help identify vulnerabilities and validate security measures.

Detection Guidance

Organizations should monitor logs for unusual access patterns that could indicate exploitation attempts. Behavioral anomalies around authentication processes should be flagged for further investigation.

AppSecure Threat Intelligence Insight

The emergence of CVE-2023-34478 highlights ongoing challenges in securing web frameworks against sophisticated attack vectors like path traversal. Security teams must remain vigilant in their assessments and implement robust validation mechanisms in their applications.

For more insights on web application security, consider our resources on web application penetration testing. Understanding the landscape of vulnerabilities is key to effective risk management.

Additionally, our offerings in application security assessment can further enhance your organization's protective measures.

Lastly, keeping abreast of trends in vulnerabilities through continuous monitoring and security practices is critical for safeguarding against future threats.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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