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OSVDB: OSVDB-92653

Tincd Post-Authentication Remote TCP Stack Buffer Overflow: Posted Dec 1, 2014; Authored by Martin Schobert, Tobias Ospelt | Site metasploit.com; This Metasploit module exploits a stack buffer overflow in Tinc's tincd service. After authentication, a specially crafted tcp packet (default port 655) leads to a buffer overflow and allows to execute arbitrary code. This Metasploit module has been tested with tinc-1.1pre6 on Windows XP (custom calc payload) and Windows 7 (windows/meterpreter/reverse_tcp), and tinc version 1.0.19 from the ports of FreeBSD 9.1-RELEASE # 0 and various other OS, see targets. The exploit probably works for all versions <= 1.1pre6. A manually compiled version (1.1.pre6) on Ubuntu 12.10 with gcc 4.7.2 seems to be a non-exploitable crash due to calls to __memcpy_chk depending on how tincd was compiled. Bug got fixed in version 1.0.21/1.1pre7. While writing this module it was recommended to the maintainer to start using DEP/ASLR and other protection mechanisms.; tags | exploit, overflow, arbitrary, tcp; systems | linux, windows, freebsd, ubuntu; advisories | CVE-2013-1428, OSVDB-92653; SHA-256 | d3e4999fe9325d233a3d46dbd61a259a73d7923e103b6f723b1d8b52ff1b7126; Download | Favorite | View

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