check on length of unwrap before memmove

2020-05-04 10:32:05 -06:00
parent 3944c8eb73
commit 082e51d778
1 changed files with 3 additions and 0 deletions
--- a/wolfcrypt/src/asn.c
+++ b/wolfcrypt/src/asn.c
@ -2683,6 +2683,9 @@ int ToTraditional_ex(byte* input, word32 sz, word32* algId)
    if (length < 0)
        return length;

+    if (length + inOutIdx > sz)
+        return BUFFER_E;
+
    XMEMMOVE(input, input + inOutIdx, length);

    return length;