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Prevent reading past the closing tag of a cov subscription #135

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Apr 22, 2024
Merged

Prevent reading past the closing tag of a cov subscription #135

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2 changes: 1 addition & 1 deletion Serialize/ASN1.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2358,7 +2358,7 @@ public static int decode_cov_subscription(byte[] buffer, int offset, int apduLen
return -1;
len += decode_unsigned(buffer, offset + len, lenValueType, out value.TimeRemaining);

if (len < apduLen && IS_OPENING_TAG(buffer[offset + len]))
if (len < apduLen && !IS_CLOSING_TAG(buffer[offset + len]))
{
decode_tag_number_and_value(buffer, offset + len, out tagNumber, out lenValueType);
if (tagNumber != 4)
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