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CVE-2013-4408:s4:dcerpc_smb: check for invalid frag_len in send_read_request_continue()

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Bug: https://bugzilla.samba.org/show_bug.cgi?id=10185

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This commit is contained in:
Stefan Metzmacher 2013-09-25 23:25:12 +02:00 committed by Karolin Seeger
parent db5fff3bc9
commit 3be7907fd9
1 changed files with 6 additions and 0 deletions
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6
source4/librpc/rpc/dcerpc_smb.c
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@ -163,6 +163,12 @@ static NTSTATUS send_read_request_continue(struct dcecli_connection *c, DATA_BLO
} else {
uint32_t frag_length = blob->length>=16?
dcerpc_get_frag_length(blob):0x2000;
if (frag_length < state->data.length) {
talloc_free(state);
return NT_STATUS_RPC_PROTOCOL_ERROR;
}
state->received = blob->length;
state->data = data_blob_talloc(state, NULL, frag_length);
if (!state->data.data) {