[PATCH 1/1] CryptoPkg: Fix pem heap-buffer-overflow due to BIO_snprintf()

["yi1 li" <yi1.li@intel.com>]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4075

Fake BIO_snprintf() need to return error status -1. 0 will be
considered a correct return value, this may cause crash, please
refer to bugzilla link for details.

Signed-off-by: Yi Li <yi1.li@intel.com>

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Xiaoyu Lu <xiaoyu1.lu@intel.com>
Cc: Guomin Jiang <guomin.jiang@intel.com>
---
 CryptoPkg/Library/BaseCryptLib/SysCall/CrtWrapper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/CrtWrapper.c b/CryptoPkg/Library/BaseCryptLib/SysCall/CrtWrapper.c
index c1fc33538f..d7d8c206ed 100644
--- a/CryptoPkg/Library/BaseCryptLib/SysCall/CrtWrapper.c
+++ b/CryptoPkg/Library/BaseCryptLib/SysCall/CrtWrapper.c
@@ -494,7 +494,7 @@ BIO_snprintf (
   ...
   )
 {
-  return 0;
+  return -1;
 }
 
 #ifdef __GNUC__
-- 
2.31.1.windows.1