Integer signedness error in the _gnutls_ciphertext2compressed function
in lib/gnutls_cipher.c in libgnutls in GnuTLS before 2.2.4 allows
remote attackers to cause a denial of service (buffer over-read and
crash) via a certain integer value in the Random field in an encrypted
Client Hello message within a TLS record with an invalid Record
Length, which leads to an invalid cipher padding length, aka
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