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CVE-2011-4971 describes multiple integer signedness errors in the functions process_bin_sasl_auth, process_bin_complete_sasl_auth, process_bin_update, and process_bin_append_prepend in Memcached 1.4.5 and earlier. These errors occur when handling large body length values in packets, leading to incorrect memory allocation or buffer handling, which can result in a crash of the memcached process.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit auxiliary module located at modules/auxiliary/dos/misc/memcached.rb. The module targets memcached servers (version 1.4.15 or earlier) and exploits CVE-2011-4971, a vulnerability that allows remote attackers to cause a segmentation fault and crash the memcached service by sending a specially crafted TCP packet. The exploit is operational and is designed for denial-of-service (DoS) attacks. The code is written in Ruby and leverages the Metasploit framework's auxiliary and remote TCP modules. The only network endpoint involved is the TCP port 11211, which is the default port for memcached. The module checks if the service is still alive after sending the packet and reports the result. No other files or endpoints are present in the repository.
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