CVE-2024-7347 is a medium-severity vulnerability affecting both NGINX Open Source and NGINX Plus. This vulnerability allows an attacker to over-read NGINX worker memory, potentially leading to its termination, by processing a specially crafted mp4 file. This issue specifically affects NGINX configurations that utilize the ngx_http_mp4_module, and only if the mp4 directive is included in the configuration file.
With a CVSS score of 5.7, the vulnerability presents a moderate risk to organizations, particularly those using NGINX for handling mp4 file streams. Although there is currently no known exploit or active exploitation reported, the potential for service disruption warrants that organizations take this issue seriously.
Organizations should prioritize patching this vulnerability, especially if they utilize the ngx_http_mp4_module in their NGINX configurations. Adopting a proactive patching strategy will help mitigate the risks associated with this vulnerability.
The urgency for defenders is moderate, as the vulnerability's exploitability is classified as medium. Immediate action is recommended to ensure that services remain stable and secure.
Vulnerability Details
The vulnerability in the ngx_http_mp4_module may allow an attacker to manipulate memory allocation, which could lead to unexpected behavior or service termination. This is particularly concerning in environments where NGINX is crucial for delivering media content.
The vulnerability is classified under CWE-125 and CWE-126, indicating issues related to out-of-bounds read and buffer over-read, respectively. It is essential that affected systems are promptly updated to prevent potential disruptions.
Technical Analysis
The root cause of CVE-2024-7347 lies in the implementation of the ngx_http_mp4_module within NGINX. Attackers may exploit this vulnerability by sending specially crafted mp4 files, which can trigger a buffer over-read condition, leading to memory access violations.
The attack vector is local, meaning an attacker must have access to the system where NGINX is running. The complexity of the attack is rated as high, indicating that sophisticated knowledge of NGINX configurations and the mp4 module is necessary.
The attack requires low privileges, and no user interaction is needed to trigger the vulnerability. If successfully exploited, the availability impact is rated as high, as it can lead to the termination of the NGINX service.
Risk & Impact Analysis
The real-world deployment risk of this vulnerability is moderate. Organizations using NGINX to serve media files should be particularly vigilant, as an attacker exploiting this flaw could cause significant service disruptions.
The potential blast radius is also notable, especially for businesses that rely heavily on NGINX for content delivery. The availability impact could affect multiple services, leading to broader implications for user experience and operational continuity.
Given the CVSS score and the lack of known exploits, organizations should treat this vulnerability with a medium urgency. Scheduling remediation as part of the next patch cycle is advisable.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects the following versions of NGINX:
NGINX Open Source versions from 1.5.13 to 1.26.2, and version 1.27.0. For NGINX Plus, versions from r27 to r31, and r31:p1 and r32 are affected.
Mitigation & Remediation
Organizations should ensure they are running the latest versions of NGINX to mitigate this vulnerability. If a patch is unavailable, consider disabling the ngx_http_mp4_module in the configuration to reduce risk.
For further guidance on security testing and best practices, organizations can refer to the penetration testing resources.
Detection Guidance
To detect potential exploitation of this vulnerability, monitor system logs for unusual memory usage patterns and unexpected worker process terminations. Any anomalies in file handling related to mp4 files should also be flagged for investigation.
AppSecure Threat Intelligence Insight
CVE-2024-7347 highlights ongoing challenges in software vulnerabilities related to multimedia processing. Organizations should review their configurations and ensure robust security practices are in place.
This vulnerability is a reminder of the importance of thorough testing and validation of third-party modules. Security teams must continually enhance their security posture to mitigate similar risks in the future.
For more insights on vulnerability management and best practices, see our articles on vulnerability management and effective penetration testing methodology strategies.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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