Vulnerability Report: GO-2021-0154

standard library

When SessionTicketsDisabled is enabled, crypto/tls allowed man-in-the-middle attackers to spoof clients via unspecified vectors. If the server enables TLS client authentication using certificates (this is rare) and explicitly sets SessionTicketsDisabled to true in the tls.Config, then a malicious client can falsely assert ownership of any client certificate it wishes.

Affected Packages

  • Path
    Go Versions
    Symbols
  • from go1.1.0-0 before go1.3.2
    2 unexported affected symbols
    • checkForResumption
    • decryptTicket

Aliases

References

Credits

  • Go Team

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