CVE-2023-4882 is a high-severity denial-of-service (DoS) vulnerability found in Open5GS. This vulnerability allows an attacker to register a new VNF (Virtual Network Function) value, which can trigger the execution of the args_assets() function defined in the arg-log.php file. Consequently, this action executes the args-abort.c file, causing the service to crash. The CVSS score for this vulnerability is 7.5, indicating a high severity level due to its potential impact on availability.
Organizations using Open5GS should be aware of the risks associated with this vulnerability. The impact can be significant, as it may lead to service disruptions. Attackers may leverage this vulnerability to exploit services, leading to potential downtime and loss of functionality.
The urgency for defenders is critical; organizations should prioritize patching immediately to mitigate this risk. With the current state of cybersecurity threats, it is essential to address vulnerabilities like CVE-2023-4882 promptly.
As of now, there are no known exploits or public proof-of-concept (PoC) available for this vulnerability. However, the potential for exploitation remains a concern. Organizations are advised to monitor their systems and apply security updates from Open5GS as soon as they are available.
Vulnerability Details
The official description of CVE-2023-4882 indicates it is a DoS vulnerability that could allow an attacker to register a new VNF value. The affected product is Open5GS, with a CVSS score of 7.5, categorized under CWE-404. The vulnerability was first published on October 3, 2023.
Technical Analysis
The root cause of this vulnerability lies in the handling of VNF registrations within the Open5GS software. The attack vector is through the network, and the complexity of the attack is low, requiring no privileges or user interaction. The confidentiality impact is none, and the integrity impact is also none; however, the availability impact is high, making it critical for service uptime.
Risk & Impact Analysis
The real-world risk associated with CVE-2023-4882 includes potential service disruptions that can affect organizations utilizing Open5GS for critical functions. The likelihood of exploitation is concerning, given the low complexity of the attack and the high availability impact. Organizations should assess their deployment of Open5GS and implement necessary mitigations to reduce risk.
Assessing the urgency based on the CVSS score and the absence of known exploits suggests that organizations should address this vulnerability in their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects Open5GS versions up to and including 2.4.10. Organizations should ensure they are using the latest versions to mitigate the risk.
Mitigation & Remediation
Organizations should apply the latest security patches from Open5GS to remediate this vulnerability. If a patch is not immediately available, consider implementing workarounds such as restricting access to the affected components or enhancing monitoring to detect any unusual activity. Configuration hardening and network controls should also be reviewed to ensure adequate defenses are in place. For further guidance on security testing, organizations can refer to penetration testing methodologies.
Detection Guidance
Security teams should monitor logs for indicators of unusual registration activity or service crashes. Behavioral anomalies associated with the args-assets function execution should be investigated. Network signatures that may indicate exploitation attempts should also be established, alongside system changes that could signify an attack.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2023-4882 lies in its reflection of the evolving landscape of DoS vulnerabilities in network functions. Security teams should note that vulnerabilities like this can have widespread implications if not addressed promptly. Organizations should leverage this incident to enhance their overall security posture and ensure robust defenses are in place against similar threats. For more insights, organizations can explore vulnerability management programs and consider adopting penetration testing methodologies to proactively identify security gaps.
Additionally, understanding the importance of API security testing can further strengthen defenses against such vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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