[FREEBSD:1AAAA5C6-804D-11EC-8BE6-D4C9EF517024] OpenSSL -- BN_mod_exp incorrect results on MIPS

The OpenSSL project reports:

  BN_mod_exp may produce incorrect results on MIPS (Moderate)
  There is a carry propagation bug in the MIPS32 and MIPS64 squaring
    procedure. Many EC algorithms are affected, including some of the
    TLS 1.3 default curves. Impact was not analyzed in detail, because the
    pre-requisites for attack are considered unlikely and include reusing
    private keys. Analysis suggests that attacks against RSA and DSA as a
    result of this defect would be very difficult to perform and are not
    believed likely. Attacks against DH are considered just feasible
    (although very difficult) because most of the work necessary to deduce
    information about a private key may be performed offline. The amount
    of resources required for such an attack would be significant.
    However, for an attack on TLS to be meaningful, the server would have
    to share the DH private key among multiple clients, which is no longer
    an option since CVE-2016-0701.