CVE-2022-24990 is a high-severity vulnerability affecting TerraMaster NAS devices running version 4.2.29 and earlier. This vulnerability allows remote attackers to discover the administrative password by sending a specific User-Agent to a vulnerable API endpoint. The attack vector exploits the system's response, which inadvertently reveals sensitive information, posing a significant risk to organizations.
The CVSS score for this vulnerability is 7.5, indicating a high severity level. This score reflects the low attack complexity and the lack of required privileges, making the vulnerability more accessible to potential attackers. Organizations using affected versions of TerraMaster NAS should be particularly vigilant, as the risk to organizations includes unauthorized access to sensitive data, which can have serious implications.
Exploitation status indicates that this vulnerability is known and has been included in the Known Exploited Vulnerabilities (KEV) catalog. The urgency for defenders is high, as attackers may leverage this vulnerability to compromise systems if left unaddressed. Organizations should prioritize patching immediately.
Organizations are advised to monitor their systems closely and implement security measures to mitigate the risks associated with this vulnerability. Early detection and swift remediation are essential in protecting sensitive information from unauthorized access.
Vulnerability Details
The official description of CVE-2022-24990 states: 'TerraMaster NAS 4.2.29 and earlier allows remote attackers to discover the administrative password by sending "User-Agent: TNAS" to module/api.php?mobile/webNasIPS and then reading the PWD field in the response.' This vulnerability falls under the CWE-306 classification, which indicates a lack of adequate access control mechanisms.
The vulnerability is classified as high severity due to its CVSS score of 7.5, which denotes a significant potential impact on confidentiality. The potential for attackers to gain administrative access without any authentication further exacerbates the risk posed by this vulnerability.
The vulnerability was publicly disclosed on February 7, 2023. Organizations using the affected product should be aware of the potential risks and the importance of swift action.
Technical Analysis
The root cause of this vulnerability stems from inadequate security controls in the TerraMaster NAS API. Attackers can exploit this flaw by sending a specially crafted User-Agent header, which allows them to retrieve the administrative password from the response. This attack can be executed over the network, requiring no prior authentication or user interaction, which significantly lowers the barrier to exploitation.
The attack complexity is classified as low, meaning that attackers can easily exploit this vulnerability without specialized knowledge. There are no privileges required, and user interaction is not necessary, making this an attractive target for attackers. The vulnerability has a high impact on confidentiality, with no impact on integrity or availability, as it primarily exposes sensitive credentials.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2022-24990 is significant. Organizations using affected versions of TerraMaster NAS are at high risk of unauthorized access to sensitive administrative functions. The ability for attackers to discover administrative passwords can lead to further exploitation, including data breaches and system compromises.
The blast radius potential for this vulnerability is extensive, as many organizations utilize TerraMaster NAS devices for critical storage solutions. If compromised, attackers could not only access sensitive data but also manipulate or delete it, leading to severe operational impacts. Given the CVSS score and known exploitation status, organizations should address this vulnerability in their priority patch cycle.
The urgency for remediation is critical, as the potential for exploitation is high. Organizations must take immediate action to protect their systems from possible attacks leveraging this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | Yes |
Affected Versions
All versions of TerraMaster NAS prior to 4.2.31 are affected by this vulnerability. Organizations should verify their current software version and implement necessary updates to mitigate the risk.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the vendor's patches as soon as they are available. It is essential to regularly update software and firmware to ensure that security vulnerabilities are addressed promptly. If patches are not available, consider implementing network segmentation and access controls to limit exposure.
Organizations may also benefit from conducting a thorough security assessment to identify other potential vulnerabilities and strengthen their security posture. For ongoing protection, organizations should consider investing in penetration testing services to proactively identify and remediate vulnerabilities.
Detection Guidance
Organizations should monitor logs for unusual access patterns, particularly around the API endpoints that utilize "User-Agent: TNAS". Behavioral anomalies and failed login attempts may also indicate attempts to exploit this vulnerability. Implementing network signatures to detect exploit attempts can further enhance the security posture.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-24990 lies in its demonstration of how misconfigured or inadequately secured APIs can lead to substantial risks. As organizations increasingly rely on networked devices, the importance of securing these endpoints cannot be overstated.
This vulnerability represents a pattern seen across many IoT and NAS devices, highlighting the need for manufacturers to implement robust security mechanisms. Security teams should take this incident as a lesson in ensuring that all devices are regularly updated and monitored for potential exploits.
For organizations using TerraMaster products, it is crucial to stay informed about security updates and potential vulnerabilities. Investing in application security assessments and implementing rigorous security testing practices will help mitigate risks associated with vulnerabilities like CVE-2022-24990.
Additionally, organizations should consider engaging in red teaming services to simulate attacks and better understand the vulnerabilities in their environments.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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