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CVE-2009-1386 is a NULL pointer dereference in OpenSSL's DTLS processing in ssl/s3_pkt.c. In OpenSSL versions before 0.9.8i, a DTLS ChangeCipherSpec record received before the ClientHello can trigger the dereference and crash the DTLS daemon.
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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 that exploits a denial of service vulnerability in OpenSSL's DTLS implementation (CVE-2009-1386). The module is written in Ruby and is located at 'modules/auxiliary/dos/ssl/dtls_changecipherspec.rb'. It targets OpenSSL versions 0.9.8i and earlier, which are vulnerable to a crash if they receive a ChangeCipherSpec datagram before a ClientHello. The module constructs a malicious UDP packet with a specific payload and sends it to the target's IP address and port (default 80, but configurable). The attack vector is network-based, and the exploit does not require authentication. The only endpoints referenced are the user-supplied target IP (RHOST) and the broadcast address (255.255.255.255) used for sending the packet. The exploit is operational and can reliably crash the vulnerable OpenSSL DTLS service, resulting in a denial of service.
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