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Fixes #507 in LibTomCrypt #3320

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Oct 9, 2019
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Fixes #507 in LibTomCrypt #3320

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2 changes: 1 addition & 1 deletion core/lib/libtomcrypt/src/pk/asn1/der/utf8/der_decode_utf8_string.c
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Original file line number Diff line number Diff line change
Expand Up @@ -66,7 +66,7 @@ int der_decode_utf8_string(const unsigned char *in, unsigned long inlen,
/* count number of bytes */
for (z = 0; (tmp & 0x80) && (z <= 4); z++, tmp = (tmp << 1) & 0xFF);

if (z > 4 || (x + (z - 1) > inlen)) {
if (z == 1 || z > 4 || (x + (z - 1) > inlen)) {
return CRYPT_INVALID_PACKET;
}

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