base64: Prevent buffer overflow by not decoding blocks with less than 4 chars

1 files changed, 1 insertions, 1 deletions

diff --git a/src/base64.c b/src/base64.c
index e59d963..1595bd0 100644
--- a/src/base64.c
+++ b/src/base64.c
@@ -118,7 +118,7 @@ unsigned char *base64decode(const char *buf, size_t *size)
                         break;
                 }
                 len = strcspn(ptr, "\r\n\t ");
-                if (len > 0) {
+                if (len > 3) {
                         p+=base64decode_block(outbuf+p, ptr, len);
                         ptr += len;
                 } else {