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The dissect_capwap_data function in epan/dissectors/packet-capwap.c in the CAPWAP dissector of Wireshark 1.6.x before 1.6.16 and 1.8.x before 1.8.8 improperly uses a -1 data value to indicate an error condition. This flaw allows remote attackers to crash the application by sending a specially crafted CAPWAP packet, resulting in a denial of service.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit auxiliary module (modules/auxiliary/dos/wireshark/capwap.rb) that exploits a denial-of-service vulnerability (CVE-2013-4074) in the CAPWAP dissector of Wireshark and TShark (versions 1.8.0-1.8.7 and 1.6.0-1.6.15). The exploit works by sending a specifically crafted malformed UDP packet to port 5247, which is the standard CAPWAP port. When Wireshark or TShark attempts to dissect this packet, the process crashes, resulting in a denial of service. The module is written in Ruby and is designed to be run within the Metasploit framework. The only network endpoint involved is UDP port 5247, and there are no hardcoded IP addresses or domain names. The exploit is operational and can be used to crash vulnerable Wireshark/TShark instances that are monitoring CAPWAP traffic.
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