jabberd -- 3 buffer overflows

Description:

There are 3 buffer overflows in jid.c that are triggered during parsing of JID strings when components (user, host or resource) are too long.

1. jid.c, line 103: overflow in `str' buffer through strcpy() when "user" part is too long.
2. jid.c, line 115: overflow in `str' buffer through strcpy() when "host" part is too long.
3. jid.c, line 127: overflow in `str' buffer through strcpy() when "resource" part is too long.

These overflows can be used to perform a DoS attack on the server (sm process segfaults) and can possible be used for arbitrary code execution.

References:

• URL: <http://j2.openaether.org/bugzilla/show_bug.cgi?id=99>

Affects:

• jabberd <2.0.9

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