A buffer overflow vulnerability in Ruijie RG-NBR2600S Gateway version 10.3(4b12) has been identified, attributed to the lack of length verification associated with the configuration of source address NAT rules. This vulnerability allows attackers who successfully exploit it to cause the remote target device to crash or execute arbitrary commands.
The severity of this vulnerability is classified as medium, with a CVSS score of 5.1. Organizations using affected versions should be aware that the potential impact includes device crashes and unauthorized command execution. Given the nature of this vulnerability, it is crucial for organizations to prioritize patching to mitigate risks associated with its exploitation.
Currently, there are no known exploits or public proof-of-concept (PoC) available for this vulnerability. However, the risk to organizations includes significant operational disruptions and potential security breaches if left unaddressed. Therefore, organizations should assess their exposure to this vulnerability and take appropriate actions.
Organizations should prioritize patching immediately to minimize risks associated with this vulnerability.
Vulnerability Details
The official description of this vulnerability states that it is a buffer overflow vulnerability in Ruijie RG-NBR2600S Gateway version 10.3(4b12) due to the lack of length verification related to the configuration of source address NAT rules. Attackers who exploit this vulnerability can cause the remote target device to crash or execute arbitrary commands.
The CVSS score for this vulnerability is 5.1, indicating a medium severity level. This score reflects a local attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact on confidentiality and integrity is low, while availability is not affected.
The vulnerability is classified under CWE-120, representing a buffer copy without checking the size of the input. The affected product is the Ruijie RG-NBR2600S Gateway firmware version 10.3(4b12).
Technical Analysis
The root cause of the vulnerability lies in the lack of proper length verification during NAT rule configurations. This oversight allows for potential buffer overflow conditions, where an attacker can provide oversized input that exceeds allocated memory buffers.
The attack vector is classified as local, meaning an attacker must have local access to the device to exploit this vulnerability. The attack complexity is low since no special conditions or advanced skills are required to perform the attack. Importantly, no privileges are required for the attack, and no user interaction is necessary.
The vulnerability impacts confidentiality and integrity, allowing unauthorized access to sensitive information and potential modification of data. However, there is no impact on availability, as the device may crash but does not affect other services.
Risk & Impact Analysis
The deployment of the Ruijie RG-NBR2600S Gateway in various organizational environments raises concerns regarding the real-world impact of this vulnerability. Attackers who exploit this vulnerability can lead to significant operational disruptions, affecting service availability and potentially allowing unauthorized command execution.
The blast radius of this vulnerability is particularly concerning for organizations relying on this device for critical infrastructure. If exploited, attackers may gain control over the device, allowing for further exploitation of the network, which could lead to data breaches or other malicious activities.
Given the medium severity rating and the potential impact on organizational operations, urgency is high. Organizations should address this vulnerability in their priority patch cycle to ensure systems are protected against potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version of the Ruijie RG-NBR2600S Gateway is 10.3(4b12). Organizations using this version should take immediate action to mitigate the identified vulnerability. If version information is missing, it is advised to assume that all versions prior to the vendor patch are at risk.
Mitigation & Remediation
To mitigate this vulnerability, organizations are advised to promptly apply any available patches or updates provided by Ruijie for the RG-NBR2600S Gateway. It is crucial to upgrade to the latest firmware version that addresses this vulnerability.
If patches are unavailable, consider implementing configuration hardening measures, such as restricting access to the device and carefully reviewing NAT rule configurations to avoid potential exploitation.
Organizations should also enhance network controls to monitor and restrict unauthorized access attempts to the device. Regularly reviewing logs and monitoring for behavioral anomalies can help identify potential exploitation attempts.
Organizations should consider utilizing penetration testing services to validate the effectiveness of their remediation efforts.
Detection Guidance
Organizations should monitor logs for indicators of unauthorized access attempts, especially those targeting NAT rule configurations. Behavioral anomalies, such as unexpected device reboots or unusual command executions, should be investigated promptly.
Network signatures that identify abnormal traffic directed at the RG-NBR2600S Gateway can assist in early detection of potential exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-25527 highlights the importance of maintaining vigilant security practices for network devices, particularly those handling NAT configurations. This vulnerability represents a common oversight in security implementations, where inadequate input validation can lead to severe operational risks.
Security teams should learn from this incident by ensuring thorough input validation across all configurations, particularly in network devices. The strategic takeaway emphasizes the necessity of proactive security assessments, including regular vulnerability scanning and penetration testing.
Developing a robust vulnerability management program can significantly reduce the risk of similar vulnerabilities being exploited in the future.
Adopting a structured penetration testing methodology can also help organizations identify and remediate vulnerabilities before they can be exploited.
Additionally, organizations should consider API security testing as part of their overall security strategy to prevent similar vulnerabilities from impacting their systems.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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