[Privoxy-commits] [privoxy] 02/19: ssl_store_cert(): Check BIO_get_mem_data() return code

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commit bf3617413ce8781d84af3b67bfcb4f59b59a40e7
Author: Fabian Keil <fk at fabiankeil.de>
AuthorDate: Tue Jan 5 01:12:04 2021 +0100

    ssl_store_cert(): Check BIO_get_mem_data() return code
---
 openssl.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/openssl.c b/openssl.c
index ecfb6bf8..e3717af5 100644
--- a/openssl.c
+++ b/openssl.c
@@ -654,6 +654,13 @@ static int ssl_store_cert(struct client_state *csp, X509* crt)
    BIO_write(bio, &zero, 1);
 
    len = BIO_get_mem_data(bio, &bio_mem_data);
+   if (len <= 0)
+   {
+      log_error(LOG_LEVEL_ERROR, "BIO_get_mem_data() returned %d "
+         "while gathering certificate information", len);
+      ret = -1;
+      goto exit;
+   }
    encoded_text = html_encode(bio_mem_data);
    if (encoded_text == NULL)
    {

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