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Security fixes found by an EU-funded bug bounty programme:Das ist mal so ziemlich ein Totalschaden.
Other security enhancements: major rewrite of the crypto code to remove cache and timing side channels.
- a remotely triggerable memory overwrite in RSA key exchange, which can occur before host key verification
- potential recycling of random numbers used in cryptography
- on Windows, hijacking by a malicious help file in the same directory as the executable
- on Unix, remotely triggerable buffer overflow in any kind of server-to-client forwarding
- multiple denial-of-service attacks that can be triggered by writing to the terminal