Integer Overflow and Buffer Overflow in StreamReader::ReadFromExternal in RenderDoc

CVE-2023-33864 · CRITICAL Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

StreamReader::ReadFromExternal in RenderDoc before 1.27 allows an Integer Overflow with a resultant Buffer Overflow. It uses uint32_t(m_BufferSize-m_InputSize) even though m_InputSize can exceed m_BufferSize.

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