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Cast certificate length more safely

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This commit is contained in:
Matt Nadareski
2022-12-03 23:32:11 -08:00
parent b1760d3541
commit dda9b3551a
1 changed files with 8 additions and 4 deletions
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12
BurnOutSharp.Builder/PortableExecutable.cs
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@@ -707,8 +707,10 @@ namespace BurnOutSharp.Builder
entry.Length = data.ReadUInt32(ref offset);
entry.Revision = (WindowsCertificateRevision)data.ReadUInt16(ref offset);
entry.CertificateType = (WindowsCertificateType)data.ReadUInt16(ref offset);
if (entry.Length - 8 > 0)
entry.Certificate = data.ReadBytes(ref offset, (int)entry.Length - 8);
int certificateDataLength = (int)(entry.Length - 8);
if (certificateDataLength > 0)
entry.Certificate = data.ReadBytes(ref offset, certificateDataLength);
attributeCertificateTable.Add(entry);
@@ -1856,8 +1858,10 @@ namespace BurnOutSharp.Builder
entry.Length = data.ReadUInt32();
entry.Revision = (WindowsCertificateRevision)data.ReadUInt16();
entry.CertificateType = (WindowsCertificateType)data.ReadUInt16();
if (entry.Length - 8 > 0)
entry.Certificate = data.ReadBytes((int)entry.Length - 8);
int certificateDataLength = (int)(entry.Length - 8);
if (certificateDataLength > 0)
entry.Certificate = data.ReadBytes(certificateDataLength);
attributeCertificateTable.Add(entry);