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-rw-r--r--extra/yassl/src/ssl.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/extra/yassl/src/ssl.cpp b/extra/yassl/src/ssl.cpp
index 5ccc45ded2a..86dfa1c6ebd 100644
--- a/extra/yassl/src/ssl.cpp
+++ b/extra/yassl/src/ssl.cpp
@@ -58,6 +58,9 @@ int read_file(SSL_CTX* ctx, const char* file, int format, CertType type)
if (format != SSL_FILETYPE_ASN1 && format != SSL_FILETYPE_PEM)
return SSL_BAD_FILETYPE;
+ if (file == NULL || !file[0])
+ return SSL_BAD_FILE;
+
FILE* input = fopen(file, "rb");
if (!input)
return SSL_BAD_FILE;