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Add validation for packer size in ProcessCommandTasks

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This commit is contained in:
Xre0uS
2025-07-05 02:41:08 +08:00
parent aeea68be5a
commit 24eb7d007c
1 changed files with 8 additions and 0 deletions
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Extenders/agent_beacon/src_beacon/beacon/Commander.cpp
+8
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@@ -15,6 +15,14 @@ void Commander::ProcessCommandTasks(BYTE* recv, ULONG recvSize, Packer* outPacke
*inPacker = Packer( recv, recvSize );
ULONG packerSize = inPacker->Unpack32();
// Check if the packer size is valid
if (packerSize > recvSize - 4)
{
MemFreeLocal((LPVOID*)&inPacker, sizeof(Packer));
return;
}
while ( packerSize + 4 > inPacker->datasize())
{
ULONG CommandId = inPacker->Unpack32();