CVE-2025-21623 is a high-severity vulnerability affecting ClipBucket V5, an open-source video hosting platform developed by Oxygenz. This vulnerability allows unauthenticated attackers to change the template directory via a directory traversal attack. As a result, this can lead to a denial of service (DoS), impacting the availability of the service.
The CVSS score for this vulnerability is 7.5, indicating a high level of risk. Organizations using affected versions of ClipBucket should be aware that the potential impact on availability can disrupt service operations and lead to loss of access for legitimate users.
Given the nature of this vulnerability, it is crucial for defenders to prioritize patching. Organizations using versions prior to 5.5.1 - 238 should take immediate action to mitigate the risks associated with this vulnerability.
Currently, there are no known exploits or public proof of concepts associated with this vulnerability. However, the potential for exploitation exists, and monitoring for any emerging threats is advisable.
Organizations should act quickly to ensure that their installations of ClipBucket are updated to protect against this vulnerability.
Vulnerability Details
The vulnerability is classified as a directory traversal, which allows attackers to manipulate file paths and access unauthorized directories. The official CVE description highlights that versions prior to 5.5.1 - 238 are affected, and the CVSS score of 7.5 emphasizes the high severity of this issue.
The attack vector is network-based, requiring no privileges or user interaction to exploit. The availability impact is rated as high, indicating that successful exploitation can lead to significant service disruption.
The weaknesses associated with this vulnerability are identified as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) and CWE-306 (Missing Authentication for Critical Function).
Technical Analysis
The root cause of this vulnerability stems from inadequate validation of user input, specifically in the context of directory paths. Attackers may leverage this vulnerability by crafting requests that manipulate the file paths used by the application, thereby gaining access to restricted directories.
The attack complexity is rated as low, making it relatively easy for attackers to exploit this vulnerability. No privileges are required, and user interaction is not necessary, which further increases the risk of exploitation.
The confidentiality and integrity impacts are rated as none, while the availability impact is rated high due to the potential for service disruption.
Risk & Impact Analysis
Risk to organizations includes the potential for service disruption, which can lead to loss of revenue and damage to reputation. The availability impact poses a significant threat, especially for organizations that rely on ClipBucket for video hosting services.
Given the current threat landscape, organizations should assess their exposure to this vulnerability and implement necessary controls. The urgency for remediation is high, as the availability impact can adversely affect business operations.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability and ensure the continuity of their services.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to 5.5.1 - 238 of ClipBucket are affected by this vulnerability. Organizations should ensure they are running the latest version to mitigate any potential risks.
Mitigation & Remediation
To mitigate this vulnerability, organizations should upgrade to the latest version of ClipBucket. The patch addressing this issue has been made available, and organizations should prioritize implementing it.
Additionally, organizations should consider implementing configuration hardening measures to restrict access to critical directories and limit the impact of potential exploitation.
For further assistance, organizations can consult resources on penetration testing and security assessments.
Detection Guidance
Organizations should monitor logs for unusual access patterns or attempts to manipulate directory paths. Behavioral anomalies during normal operations may indicate attempts to exploit this vulnerability.
Network signatures that detect unauthorized directory traversal attempts can also assist in identifying potential exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-21623 lies in the increasing trend of directory traversal vulnerabilities being exploited in the wild. As organizations rely more on web applications, the importance of secure coding practices becomes paramount.
Security teams should take lessons from this vulnerability to enhance their application security assessments and prioritize the remediation of similar vulnerabilities.
For further reading on maintaining secure applications, organizations can explore resources on vulnerability management programs and penetration testing methodologies to strengthen their defenses.
Lastly, exploring the impact of cloud security assessments can help organizations identify and remediate similar vulnerabilities across their infrastructure.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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