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smb: check for full size message before reading message details #4363

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smb: check for full size message before reading message details #4363

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3 changes: 2 additions & 1 deletion lib/smb.c
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Expand Up @@ -682,7 +682,8 @@ static CURLcode smb_connection_state(struct connectdata *conn, bool *done)

switch(smbc->state) {
case SMB_NEGOTIATE:
if(h->status || smbc->got < sizeof(*nrsp) + sizeof(smbc->challenge) - 1) {
if((smbc->got < sizeof(*nrsp) + sizeof(smbc->challenge) - 1) ||
h->status) {
connclose(conn, "SMB: negotiation failed");
return CURLE_COULDNT_CONNECT;
}
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