CVE-2023-34346 in YF325
Summary
by MITRE • 10/25/2023
A stack-based buffer overflow vulnerability exists in the httpd gwcfg.cgi get functionality of Yifan YF325 v1.0_20221108. A specially crafted network packet can lead to command execution. An attacker can send a network request to trigger this vulnerability.
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Analysis
by VulDB Data Team • 10/25/2023
The vulnerability identified as CVE-2023-34346 represents a critical stack-based buffer overflow within the Yifan YF325 device firmware version 1.0_20221108. This flaw specifically affects the httpd gwcfg.cgi get functionality, which serves as a web interface component for device configuration management. The Yifan YF325 is a network security appliance that likely handles various administrative tasks through its web-based management interface, making this vulnerability particularly concerning for network security infrastructure.
The technical implementation of this vulnerability stems from inadequate input validation within the gwcfg.cgi script. When processing HTTP GET requests containing specially crafted parameters, the application fails to properly bounds-check user-supplied data before copying it into fixed-size stack buffers. This classic buffer overflow condition occurs because the application does not verify that incoming data fits within allocated memory boundaries, allowing an attacker to overwrite adjacent stack memory locations. The vulnerability manifests through the web server's handling of configuration requests, where the HTTP daemon processes user inputs without sufficient sanitization mechanisms.
From an operational perspective, this vulnerability presents a severe threat to affected network environments as it enables remote command execution capabilities. An attacker exploiting this flaw can potentially gain full administrative control over the device, allowing for arbitrary code execution, data exfiltration, and persistent access to the network infrastructure. The remote nature of the attack means that threat actors do not require physical access or local network presence to exploit the vulnerability, making it particularly dangerous for security-conscious organizations. The impact extends beyond individual device compromise, as compromised security appliances can serve as footholds for broader network infiltration attacks.
The vulnerability aligns with CWE-121 stack-based buffer overflow classification and maps to several ATT&CK techniques including T1059 command and scripting interpreter for remote code execution and T1071 application layer protocol for network communication. Organizations should prioritize immediate mitigation through firmware updates from the vendor, network segmentation to limit exposure, and monitoring for suspicious network traffic patterns. Additional protective measures include implementing web application firewalls, disabling unnecessary web services, and conducting comprehensive vulnerability assessments of similar network security appliances within the environment to identify potential analogous vulnerabilities.