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MINOR: ssl: check TLS1.3 ciphersuites again in clienthello with recent AWS-LC

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Patch ed9b8fec49 ("BUG/MEDIUM: ssl: AWS-LC + TLSv1.3 won't do ECDSA in
RSA+ECDSA configuration") partly fixed a cipher selection problem with
AWS-LC. However this was not checking anymore if the ciphersuites was
available in haproxy which is still a problem.

The problem was fixed in AWS-LC 1.46.0 with this PR
https://github.com/aws/aws-lc/pull/2092.

This patch allows to filter again the TLS13 ciphersuites with recent
versions of AWS-LC. However, since there are no macros to check the
AWS-LC version, it is enabled at the next AWS-LC API version change
following the fix in AWS-LC v1.50.0.

This could be backported where ed9b8fec49 was backported.
This commit is contained in:
William Lallemand 2025-06-30 16:20:29 +02:00
parent 4fcc9b5572
commit 7fc8ab0397
1 changed files with 4 additions and 2 deletions
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6
src/ssl_clienthello.c
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@ -379,9 +379,11 @@ int ssl_sock_switchctx_cbk(SSL *ssl, int *al, void *arg)
continue;
/* check if this cipher is available in haproxy configuration */
#if defined(OPENSSL_IS_AWSLC)
#if defined(OPENSSL_IS_AWSLC) && AWSLC_API_VERSION <= 32
/* because AWS-LC does not provide the TLSv1.3 ciphersuites (which are NID_auth_any) in ha_ciphers,
* does not check if it's available when it's an NID_auth_any
* does not check if it's available when it's an NID_auth_any.
* This was fixed in v1.46.0, API version changed in v1.50.0
*/
if (sk_SSL_CIPHER_find(ha_ciphers, cipher) == -1 && SSL_CIPHER_get_auth_nid(cipher) != NID_auth_any)
continue;