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Bade64_Decode - check out length (malformed input)

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Sean Parkinson 2019-12-13 09:33:00 +10:00
parent 093a31ed49
commit 6ccd146b49
1 changed files with 5 additions and 0 deletions
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5
wolfcrypt/src/coding.c
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@ -93,6 +93,11 @@ int Base64_Decode(const byte* in, word32 inLen, byte* out, word32* outLen)
return ASN_INPUT_E;
}
if (i + 1 + !pad3 + !pad4 > *outLen) {
WOLFSSL_MSG("Bad Base64 Decode out buffer, too small");
return BAD_FUNC_ARG;
}
e1 = base64Decode[e1 - BASE64_MIN];
e2 = base64Decode[e2 - BASE64_MIN];
e3 = (e3 == PAD) ? 0 : base64Decode[e3 - BASE64_MIN];