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Nginx HTTP Server 1.3.9-1.4.0 Chunked Encoding Stack Buffer Overflow

Posted May 23, 2013

Authored by Greg MacManus, hal, saelo | Site metasploit.com

This Metasploit module exploits a stack buffer overflow in versions 1.3.9 to 1.4.0 of nginx. The exploit first triggers an integer overflow in the ngx_http_parse_chunked() by supplying an overly long hex value as chunked block size. This value is later used when determining the number of bytes to read into a stack buffer, thus the overflow becomes possible.

tags | exploit, overflow

advisories | CVE-2013-2028, OSVDB-93037

SHA-256 | 5caa8725f0b0e52002e2804749d851584f474a1d0b411c2a827865afd2da031c

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