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Add deprecation note about CBC-based ciphers #1962

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Nov 14, 2024
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Add deprecation note about CBC-based ciphers #1962

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Add deprecation note about CBC-based ciphers
NataliaIvakina Nov 14, 2024
c35946e
Update modules/ROOT/pages/security/ssl-framework.adoc
NataliaIvakina Nov 14, 2024
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15 changes: 15 additions & 0 deletions modules/ROOT/pages/security/ssl-framework.adoc
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Expand Up @@ -1084,6 +1084,21 @@ One can set up a Neo4j configuration by specifying the list of cipher suites tha
Valid values depend on the current JRE and SSL provider.
For Oracle JRE here is the list of supported ones - https://docs.oracle.com/en/java/javase/17/docs/specs/security/standard-names.html#jsse-cipher-suite-names.

[IMPORTANT]
====
label:deprecated[Deprecated in 5.26]

CBC (cipher block chaining) ciphers, as used in TLS v1.2 network encryption, have several security vulnerabilities that make them less secure compared to the alternative methods.
The Internet Engineering Task Force (IETF) doesn't recommend using CBC-based ciphers (RFC 8447), and these ciphers were removed from the TLS standard with the development of TLS v1.3.

Note that the use of the following CBC-based ciphers has been deprecated in Neo4j 5.26:

* TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
* TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
* TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
* TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
====

.Bolt
[source, properties]
----
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