CVE-2023-49735 is a high-severity vulnerability affecting Apache Tiles, specifically versions 2 and later. This vulnerability allows an attacker to manipulate the DefaultLocaleResolver.LOCALE_KEY attribute on the session, which is used to resolve XML definition files. Due to insufficient validation of this attribute when processing user-controlled data, the vulnerability could lead to path traversal attacks, and potentially SSRF (Server-Side Request Forgery) or XXE (XML External Entity) attacks. The CVSS score for this vulnerability is 7.5, indicating a high level of severity and risk.
Risk to organizations includes significant confidentiality impact, as sensitive data may be exposed or manipulated. Attackers may leverage this vulnerability to gain unauthorized access to internal resources, leading to potential data breaches or service disruptions. Given its nature, organizations should address this vulnerability in their patch management processes.
The vulnerability was published on November 30, 2023, and is classified as modified, indicating that further information may have been added or changes made since the initial reporting. It's critical to note that this vulnerability affects products that are no longer supported by the maintainer, which heightens the urgency for organizations still using Apache Tiles to take immediate action.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability, especially considering the potential for exploitation in the wild.
Vulnerability Details
The official CVE description highlights that the DefaultLocaleResolver.LOCALE_KEY attribute was not properly validated when resolving XML definition files. This oversight creates a pathway for attackers, as user-controlled data can be passed to this key, potentially leading to serious vulnerabilities such as path traversal, SSRF, and XXE.
The CVSS score of 7.5 classifies this vulnerability as high, indicating that it poses a significant risk. The lack of required privileges and user interaction for exploitation further exacerbates the potential impact, making it essential for organizations to act swiftly.
Technical Analysis
The root cause of this vulnerability stems from improper validation of the DefaultLocaleResolver.LOCALE_KEY attribute, allowing attackers to exploit the application. This vulnerability has a low attack complexity; no special skills are required, and it can be executed remotely over a network. As a result, any unauthorized user can potentially exploit this vulnerability with minimal effort.
The attack vector is network-based, requiring no privileges or user interaction, which enhances its risk profile considerably. The confidentiality impact is rated as high, indicating that sensitive information may be at risk, while integrity and availability impacts are marked as none.
Risk & Impact Analysis
Organizations utilizing Apache Tiles face significant risks due to this vulnerability. The potential for path traversal and SSRF/XXE attacks indicates that unauthorized access to sensitive internal resources is feasible. The blast radius could extend to any application relying on the affected versions of Apache Tiles, making it crucial for organizations to comprehend the full scope of their exposure.
Given the high CVSS score and the fact that this vulnerability is not included in the known exploitation vulnerabilities (KEV), it is imperative for organizations to prioritize remediation efforts. The urgency for patching is further underscored by the potential for exploitation in environments with outdated software.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects Apache Tiles from version 2.0 and onward. Organizations using these versions should take immediate action to secure their applications.
Mitigation & Remediation
Organizations should prioritize patching to the latest supported version of Apache Tiles to mitigate this vulnerability. If a patch is unavailable, consider implementing workarounds that restrict user input to the DefaultLocaleResolver.LOCALE_KEY attribute and validate all user-controlled data before processing. Configuration hardening and network controls should also be applied to minimize exposure.
For additional guidance on securing applications, organizations may consider engaging in penetration testing to assess vulnerabilities and strengthen their security posture.
Detection Guidance
Organizations should monitor logs for any indicators of exploitation attempts, including unexpected access to XML definition files or attempts to manipulate the DefaultLocaleResolver.LOCALE_KEY. Behavioral anomalies in application usage may also indicate exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2023-49735 extends beyond immediate patching. It highlights the importance of rigorous validation mechanisms in application development, especially when dealing with user-controlled data. Security teams should take this opportunity to review their application architecture and ensure similar vulnerabilities are not present.
To enhance defenses, organizations should consider a comprehensive vulnerability management program that emphasizes continuous security assessments and proactive identification of vulnerabilities.
Additionally, leveraging insights from penetration testing methodologies can aid in identifying and mitigating similar risks in the future.
Lastly, organizations should remain vigilant about evolving threats and ensure regular updates and reviews of security controls to adapt to emerging vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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