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From aa81834bc3ff47aa5cc66b6763678d3cf47a3d54 Mon Sep 17 00:00:00 2001
From: Glenn Strauss <gstrauss@gluelogic.com>
Date: Fri, 12 Mar 2021 20:03:38 -0500
Subject: [PATCH] [mod_openssl] skip cert chain build if self-issued
If cert is self-issued, then do not attempt to build certificate chain.
(Attempting to build certificate chain when chain is not provided, but
ssl.ca-file is specified, is provided as backward compatible behavior
from lighttpd versions prior to lighttpd 1.4.56)
Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
---
src/mod_openssl.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/src/mod_openssl.c
+++ b/src/mod_openssl.c
@@ -103,6 +103,7 @@ typedef struct {
time_t ssl_stapling_loadts;
time_t ssl_stapling_nextts;
char must_staple;
+ char self_issued;
} plugin_cert;
typedef struct {
@@ -1081,7 +1082,7 @@ mod_openssl_cert_cb (SSL *ssl, void *arg
#if !defined(BORINGSSL_API_VERSION) \
&& !defined(LIBRESSL_VERSION_NUMBER)
/* (missing SSL_set1_chain_cert_store() and SSL_build_cert_chain()) */
- else if (hctx->conf.ssl_ca_file) {
+ else if (hctx->conf.ssl_ca_file && !pc->self_issued) {
/* preserve legacy behavior whereby openssl will reuse CAs trusted for
* certificate verification (set by SSL_CTX_load_verify_locations() in
* SSL_CTX) in order to build certificate chain for server certificate
@@ -1671,6 +1672,9 @@ network_openssl_load_pemfile (server *sr
#else
pc->must_staple = 0;
#endif
+ pc->self_issued =
+ (0 == X509_NAME_cmp(X509_get_subject_name(ssl_pemfile_x509),
+ X509_get_issuer_name(ssl_pemfile_x509)));
if (!buffer_string_is_empty(pc->ssl_stapling_file)) {
#ifndef OPENSSL_NO_OCSP