Debian 10 DLA-3455-1 Critical: golang-go.crypto Message Forgery

An issue was discovered in supplementary Go cryptography libraries, aka
golang-googlecode-go-crypto. If more than 256 GiB of keystream is
generated, or if the counter otherwise grows greater than 32 bits, the
amd64 implementation will first generate incorrect output, and then cycle
back to previously generated keystream. Repeated keystream bytes can lead
to loss of confidentiality in encryption applications, or to predictability
in CSPRNG applications.

CVE-2019-11841

A message-forgery issue was discovered in
crypto/openpgp/clearsign/clearsign.go in supplementary Go cryptography
libraries. The "Hash" Armor Header specifies the message digest
algorithm(s) used for the signature. Since the library skips Armor Header
parsing in general, an attacker can not only embed arbitrary Armor Headers,
but also prepend arbitrary text to cleartext messages without invalidating
the signatures.

CVE-2020-9283