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userauth_keyboard_interactive: fix buffer overflow

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Partly reverse 566894494b which was simplifying the code far too
much and ended up overflowing a buffer within the LIBSSH2_SESSION
struct. Back to allocating the buffer properly like it used to do.

Bug: http://www.libssh2.org/mail/libssh2-devel-archive-2011-06/0032.shtml
Reported by: Alfred Gebert
This commit is contained in:
Daniel Stenberg
2011-06-29 21:30:22 +02:00
parent dadc05fdfd
commit 45ffdcfe3c
2 changed files with 15 additions and 6 deletions
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1
src/libssh2_priv.h
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@@ -683,7 +683,6 @@ struct _LIBSSH2_SESSION
/* State variables used in libssh2_userauth_keyboard_interactive_ex() */
libssh2_nonblocking_states userauth_kybd_state;
unsigned char userauth_buf[5];
unsigned char *userauth_kybd_data;
size_t userauth_kybd_data_len;
unsigned char *userauth_kybd_packet;