Mercurial > hg > nginx-quic
diff src/event/ngx_event_openssl_stapling.c @ 7493:dbebbb25ae92
OCSP stapling: fixed segfault with dynamic certificate loading.
If OCSP stapling was enabled with dynamic certificate loading, with some
OpenSSL versions (1.0.2o and older, 1.1.0h and older; fixed in 1.0.2p,
1.1.0i, 1.1.1) a segmentation fault might happen.
The reason is that during an abbreviated handshake the certificate
callback is not called, but the certificate status callback was called
(https://github.com/openssl/openssl/issues/1662), leading to NULL being
returned from SSL_get_certificate().
Fix is to explicitly check SSL_get_certificate() result.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 15 Apr 2019 19:13:09 +0300 |
parents | edf5cd6c56fa |
children | b99cbafd51da |
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--- a/src/event/ngx_event_openssl_stapling.c +++ b/src/event/ngx_event_openssl_stapling.c @@ -511,6 +511,11 @@ ngx_ssl_certificate_status_callback(ngx_ rc = SSL_TLSEXT_ERR_NOACK; cert = SSL_get_certificate(ssl_conn); + + if (cert == NULL) { + return rc; + } + staple = X509_get_ex_data(cert, ngx_ssl_stapling_index); if (staple == NULL) {