OpenSSL v3.0.0-alpha1 Release Notes

Release Date: 2020-04-23 // about 1 year ago

Previous changes from v1.1.1.f

    • Fixed segmentation fault in SSL_check_chain() Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. ([CVE-2020-1967])

    Benjamin Kaduk

    • Added AES consttime code for no-asm configurations an optional constant time support for AES was added when building openssl for no-asm. Enable with: ./config no-asm -DOPENSSL_AES_CONST_TIME Disable with: ./config no-asm -DOPENSSL_NO_AES_CONST_TIME At this time this feature is by default disabled. It will be enabled by default in 3.0.

    Bernd Edlinger