CVE-2025-25214: Race Condition in AVideo Leads to Potential Code Execution
Welcome to another security deep dive! Today we're covering CVE-2025-25214, a vulnerability found in WWBN AVideo that could allow attackers to execute arbitrary code on affected systems.
🔍 TL;DR Summary
A race condition vulnerability exists in the `aVideoEncoder.json.php` component of WWBN AVideo. By sending specially crafted HTTP requests, an attacker could exploit this flaw to achieve remote code execution (RCE). This poses a significant risk to systems running vulnerable versions of AVideo.
🚨 Vulnerability Details
- CVE ID: CVE-2025-25214
- Description: A race condition vulnerability exists in the `aVideoEncoder.json.php` unzip functionality of WWBN AVideo 14.4 and dev master commit 8a8954ff. A series of specially crafted HTTP requests can lead to arbitrary code execution.
- CVSS Score: 8.8 HIGH
- CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS Explanation: This score indicates a high severity vulnerability. 'AV:N' means the attack can be launched over the network. 'AC:L' signifies low attack complexity. 'PR:L' indicates that the attacker needs low privileges (e.g., a basic user account). 'UI:N' means no user interaction is required. 'S:U' means the vulnerability is scoped to the application itself. 'C:H/I:H/A:H' indicates high impact on confidentiality, integrity, and availability.
- Exploit Requirements: An attacker needs to be able to send HTTP requests to the affected AVideo instance. A low-privileged account may be needed.
- Affected Vendor: WWBN
- Affected Product: AVideo
- Affected Version: 14.4 and dev master commit 8a8954ff
- CWE: CWE-362 (Race Condition)
- CWE Explanation: A race condition occurs when the correct execution of a program depends on the relative timing of events. In this case, multiple threads or processes are trying to access and modify shared data concurrently, and the outcome depends on which one finishes first.
📅 Timeline of Events
- 2025-07-24: CVE Published
🧠 Exploitability & Real-World Risk
The race condition in AVideo's `aVideoEncoder.json.php` component presents a significant risk. If successfully exploited, an attacker can gain complete control over the affected server, potentially leading to data theft, system compromise, or denial of service. Given that AVideo is a popular video platform, this vulnerability could have a wide-ranging impact. The low attack complexity and privilege requirements make this vulnerability particularly attractive to attackers.
🛠️ Recommendations
Until an official patch is released, the following recommendations can help mitigate the risk:
- Monitor Network Traffic: Keep a close eye on incoming HTTP requests, especially those targeting the `aVideoEncoder.json.php` endpoint.
- Restrict Access: Limit access to the AVideo instance to only authorized users.
- Web Application Firewall (WAF): Implement a WAF to filter out malicious requests and potentially block exploit attempts.
- Stay Updated: Keep AVideo and all its dependencies up-to-date with the latest security patches once available.
🧪 Technical Insight
The race condition likely occurs during the processing of uploaded files. Specifically, the vulnerable code probably involves the extraction or processing of zip files. The attacker likely can influence the file extraction process by sending concurrent requests. This can cause a race condition where files are written with unexpected permissions or to unintended locations, ultimately leading to code execution.
🙌 Credit to Researcher(s)
This vulnerability was discovered and reported by researchers at Talos Intelligence.
🔗 References
🧵 Tags
#CVE-2025-25214 #AVideo #RaceCondition #RemoteCodeExecution #Security #PHP #WebApp
Summary: CVE-2025-25214 is a high-severity race condition vulnerability in WWBN AVideo's `aVideoEncoder.json.php` component. Successful exploitation could lead to remote code execution, allowing an attacker to compromise the affected system. Mitigation strategies include monitoring network traffic, restricting access, and implementing a WAF.
CVE ID: CVE-2025-25214
Risk Analysis: Successful exploitation of this race condition could allow an attacker to gain complete control over the affected AVideo server, leading to data theft, system compromise, and potential disruption of services.
Recommendation: Monitor network traffic, restrict access to the AVideo instance, implement a Web Application Firewall, and apply security patches once available.
Timeline
- 2025-07-24: CVE Published