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Re-order global default TLS cipher list to prefer AES256 over AES128

This commit is contained in:
Alexander A. Klimov 2023-07-03 15:36:11 +02:00
parent 2e053b0e06
commit 617dda61fb
2 changed files with 6 additions and 4 deletions
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4
doc/09-object-types.md
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@ -1102,7 +1102,7 @@ Configuration Attributes:
accept\_config | Boolean | **Optional.** Accept zone configuration. Defaults to `false`.
accept\_commands | Boolean | **Optional.** Accept remote commands. Defaults to `false`.
max\_anonymous\_clients | Number | **Optional.** Limit the number of anonymous client connections (not configured endpoints and signing requests).
cipher\_list | String | **Optional.** Cipher list that is allowed. For a list of available ciphers run `openssl ciphers`. Defaults to `ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305`.
cipher\_list | String | **Optional.** Cipher list that is allowed. For a list of available ciphers run `openssl ciphers`. Defaults to `ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256`.
tls\_protocolmin | String | **Optional.** Minimum TLS protocol version. Since v2.11, only `TLSv1.2` is supported. Defaults to `TLSv1.2`.
tls\_handshake\_timeout | Number | **Deprecated.** TLS Handshake timeout. Defaults to `10s`.
connect\_timeout | Number | **Optional.** Timeout for establishing new connections. Affects both incoming and outgoing connections. Within this time, the TCP and TLS handshakes must complete and either a HTTP request or an Icinga cluster connection must be initiated. Defaults to `15s`.
@ -1395,7 +1395,7 @@ Configuration Attributes:
key\_path | String | **Optional.** Path to the private key.
ca\_path | String | **Optional.** Path to the CA certificate to use instead of the system's root CAs.
crl\_path | String | **Optional.** Path to the CRL file.
cipher\_list | String | **Optional.** Cipher list that is allowed. For a list of available ciphers run `openssl ciphers`. Defaults to `ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305`.
cipher\_list | String | **Optional.** Cipher list that is allowed. For a list of available ciphers run `openssl ciphers`. Defaults to `ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256`.
tls\_protocolmin | String | **Optional.** Minimum TLS protocol version. Defaults to `TLSv1.2`.
insecure\_noverify | Boolean | **Optional.** Whether not to verify the peer.
connect\_timeout | Number | **Optional.** Timeout for establishing new connections. Within this time, the TCP, TLS (if enabled) and Redis handshakes must complete. Defaults to `15s`.

6
lib/base/tlsutility.hpp
View File

@ -25,8 +25,10 @@
namespace icinga
{
// Source: https://ssl-config.mozilla.org
const char * const DEFAULT_TLS_CIPHERS = "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305";
// Source: https://ssl-config.mozilla.org, i.e.
// ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305
// Modified so that AES256 is preferred over AES128.
const char * const DEFAULT_TLS_CIPHERS = "ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256";
const char * const DEFAULT_TLS_PROTOCOLMIN = "TLSv1.2";
const unsigned int DEFAULT_CONNECT_TIMEOUT = 15;