A vulnerability in the web-based user interface of Cisco Small Business 100, 300, and 500 Series Wireless APs could allow an authenticated, remote attacker to perform buffer overflow attacks against an affected device. In order to exploit this vulnerability, the attacker must have valid administrative credentials for the device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system.
With a CVSS score of 6.5, this vulnerability is classified as medium severity. The potential risk involves significant impacts on confidentiality and integrity, as an attacker may gain control over the device's operating system. Organizations utilizing affected Cisco devices must understand the implications of this vulnerability, particularly those with administrative access.
Given the nature of the vulnerability, organizations should prioritize patching immediately. Failure to address this vulnerability could lead to unauthorized access and control over network devices, which may facilitate further attacks within the network.
Currently, there are no known exploits in the wild, and public proof-of-concept (PoC) code has not been confirmed. However, the risk remains significant, particularly due to the required administrative credentials for exploitation.
Vulnerability Details
The vulnerability allows authenticated attackers to perform buffer overflow attacks, leveraging insufficient input validation. The affected products include various firmware versions across Cisco's Small Business Wireless APs. The vulnerability is classified under CWE-121, which pertains to stack-based buffer overflow.
Published on March 6, 2024, this vulnerability has been analyzed and is now part of the security advisories from Cisco. The affected products include wap121_firmware, wap125_firmware, wap131_firmware, wap150_firmware, wap320_firmware, wap321_firmware, wap351_firmware, wap361_firmware, wap371_firmware, wap571_firmware, wap571e_firmware, and wap581_firmware.
Technical Analysis
The root cause of this vulnerability is insufficient validation of user input, which leads to buffer overflow conditions. This type of vulnerability can be exploited through the network, and it requires high privileges, specifically administrative access to the device.
The attack complexity is considered low, as the attacker only needs to craft a specific HTTP request. Notably, user interaction is not required to trigger the vulnerability. The impact assessment indicates a high confidentiality and integrity impact, while availability remains unaffected.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to network devices, potentially leading to further attacks or data breaches. The blast radius is significant, given that affected devices are often integral to network infrastructure. Organizations should assess their exposure to this vulnerability and prioritize remediation efforts.
The urgency for remediation is categorized as medium, as the vulnerability presents a considerable risk but is not yet actively exploited in the wild.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects the following firmware versions: wap121_firmware, wap125_firmware, wap131_firmware, wap150_firmware, wap320_firmware, wap321_firmware, wap351_firmware, wap361_firmware, wap371_firmware, wap571_firmware, wap571e_firmware, and wap581_firmware. Organizations should ensure they are running the latest firmware versions to mitigate this risk.
Mitigation & Remediation
Organizations should prioritize updating to the latest firmware versions from Cisco to address this vulnerability. If a patch is unavailable, consider implementing network segmentation to limit access to the management interface and monitor for any unauthorized access attempts. Additionally, security controls should be strengthened to detect and respond to potential exploitation attempts.
For further guidance, organizations may refer to our comprehensive resources on penetration testing as an effective measure to identify similar vulnerabilities.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual HTTP requests targeting the management interface of affected devices. Behavioral anomalies indicative of buffer overflow attempts should be investigated promptly. Additionally, network signatures corresponding to known attack patterns may aid in early detection of exploitation attempts.
AppSecure Threat Intelligence Insight
This vulnerability highlights the persistent risks associated with insufficient input validation in network devices. Organizations should remain vigilant about monitoring their network infrastructure for vulnerabilities and apply necessary updates promptly. To learn more about best practices in vulnerability management, consider exploring our insights on vulnerability management programs, and enhance your understanding of penetration testing methodologies to better defend against similar vulnerabilities.
Finally, organizations should consider compliance standards as part of their security strategy to ensure all potential vulnerabilities are adequately addressed and mitigated.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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