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A stack-based buffer overflow vulnerability exists in dnsmasq before version 2.78. The flaw is triggered when dnsmasq processes a specially crafted DHCPv6 request, leading to a buffer overflow on the stack. This can be exploited remotely by an attacker to crash the service or potentially execute arbitrary code with the privileges of the dnsmasq process.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a Python proof-of-concept exploit for CVE-2017-14493, a buffer overflow vulnerability in dnsmasq's DHCPv6 code. The main file, 'bof-dnsmasq-cve-2017-14493.py', constructs a specially crafted DHCPv6 packet containing a ROP chain and shell command payload. The exploit targets a remote dnsmasq service over IPv6 UDP (port 547), aiming to trigger the buffer overflow and execute arbitrary code. The payload attempts to launch a netcat listener on the target, providing a shell to the attacker. The repository is structured simply, with a README and the exploit script. The exploit is operational, requiring the attacker to specify the target's IPv6 address and port. No hardcoded IPs or domains are present; the script takes these as arguments. The exploit is not part of a framework and is a standalone POC with a working payload.
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