Commit 642a1c38 authored by Xin LI's avatar Xin LI
Browse files

Apply upstream fix for CVE-2016-8858:

  Unregister the KEXINIT handler after message has been received.
  Otherwise an unauthenticated peer can repeat the KEXINIT and cause
  allocation of up to 128MB -- until the connection is closed.
  Reported by shilei-c at

Obtained from:	OpenBSD
parent b5a1df4a
......@@ -468,6 +468,7 @@ kex_input_kexinit(int type, u_int32_t seq, void *ctxt)
if (kex == NULL)
ssh_dispatch_set(ssh, SSH2_MSG_KEXINIT, NULL);
ptr = sshpkt_ptr(ssh, &dlen);
if ((r = sshbuf_put(kex->peer, ptr, dlen)) != 0)
return r;
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