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CVE-2021-33549 is a stack-based buffer overflow vulnerability in multiple camera devices manufactured by UDP Technology, Geutebrück, and other vendors. The vulnerability exists in the handling of the 'action' parameter, where insufficient bounds checking allows an attacker to overflow the stack buffer. This flaw can be exploited remotely, potentially allowing arbitrary code execution on the affected device.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module (modules/exploits/linux/http/geutebruck_instantrec_bof.rb) that exploits a buffer overflow vulnerability (CVE-2021-33549) in the 'action' parameter of the /uapi-cgi/instantrec.cgi endpoint on several Geutebruck camera models running specific firmware versions. The exploit is network-based and leverages a crafted POST request to the vulnerable CGI endpoint, triggering a buffer overflow and executing a ROP chain to run arbitrary system commands as root. The default payload is a reverse shell, but other Metasploit payloads can be used. The module is operational and provides remote code execution capabilities. The repository is structured as a typical Metasploit exploit module, with all logic contained in a single Ruby file.
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