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+In windows host, tftp arbitrary file read vulnerability
+
+https://github.com/qemu/qemu/blob/master/slirp/tftp.c#L343
+
+  if (!strncmp(req_fname, "../", 3) ||
+      req_fname[strlen(req_fname) - 1] == '/' ||
+      strstr(req_fname, "/../")) {
+      tftp_send_error(spt, 2, "Access violation", tp);
+      return;
+  }
+
+There are file path check for not allowing escape tftp directory.
+But, in windows, file path is separated by "\" backslash.
+So, guest can read arbitrary file in Windows host.
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