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-rw-r--r--src/backend/libpq/be-secure-openssl.c14
-rw-r--r--src/include/pg_config.h.in3
2 files changed, 16 insertions, 1 deletions
diff --git a/src/backend/libpq/be-secure-openssl.c b/src/backend/libpq/be-secure-openssl.c
index 4c7e16ca2ca..ef1b65b443b 100644
--- a/src/backend/libpq/be-secure-openssl.c
+++ b/src/backend/libpq/be-secure-openssl.c
@@ -249,8 +249,20 @@ be_tls_init(bool isServerStart)
}
}
- /* disallow SSL session tickets */
+ /*
+ * Disallow SSL session tickets. OpenSSL use both stateful and stateless
+ * tickets for TLSv1.3, and stateless ticket for TLSv1.2. SSL_OP_NO_TICKET
+ * is available since 0.9.8f but only turns off stateless tickets. In
+ * order to turn off stateful tickets we need SSL_CTX_set_num_tickets,
+ * which is available since OpenSSL 1.1.1. LibreSSL 3.5.4 (from OpenBSD
+ * 7.1) introduced this API for compatibility, but doesn't support session
+ * tickets at all so it's a no-op there.
+ */
+#ifdef HAVE_SSL_CTX_SET_NUM_TICKETS
+ SSL_CTX_set_num_tickets(context, 0);
+#else
SSL_CTX_set_options(context, SSL_OP_NO_TICKET);
+#endif
/* disallow SSL session caching, too */
SSL_CTX_set_session_cache_mode(context, SSL_SESS_CACHE_OFF);
diff --git a/src/include/pg_config.h.in b/src/include/pg_config.h.in
index 768e3d719c1..e787d2dec2d 100644
--- a/src/include/pg_config.h.in
+++ b/src/include/pg_config.h.in
@@ -721,6 +721,9 @@
/* Define to 1 if you have the `X509_get_signature_nid' function. */
#undef HAVE_X509_GET_SIGNATURE_NID
+/* Define to 1 if you have the `SSL_CTX_set_num_tickets' function. */
+#undef HAVE_SSL_CTX_SET_NUM_TICKETS
+
/* Define to 1 if the assembler supports X86_64's POPCNTQ instruction. */
#undef HAVE_X86_64_POPCNTQ