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| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2021-08-24 09:27:48 +0200 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2021-08-24 09:29:24 +0200 |
| commit | 09206053d55f5e1be4def679a3e5dab49db5efd1 (patch) | |
| tree | 07f06d8e82b439817838916e42f885303ac7dc1b /src/Driver/Ntdriver.c | |
| parent | f462160542d59c79a5eeafcffec66951705bbb23 (diff) | |
| download | VeraCrypt-09206053d55f5e1be4def679a3e5dab49db5efd1.tar.gz VeraCrypt-09206053d55f5e1be4def679a3e5dab49db5efd1.zip | |
Windows Driver: Potential memory corruption caused by integer overflow in IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES (reported by I.V. Sprundel)
Diffstat (limited to 'src/Driver/Ntdriver.c')
| -rw-r--r-- | src/Driver/Ntdriver.c | 82 |
1 files changed, 61 insertions, 21 deletions
diff --git a/src/Driver/Ntdriver.c b/src/Driver/Ntdriver.c index 2d025fa5..ca840fea 100644 --- a/src/Driver/Ntdriver.c +++ b/src/Driver/Ntdriver.c @@ -154,6 +154,29 @@ ULONG ExDefaultMdlProtection = 0; PDEVICE_OBJECT VirtualVolumeDeviceObjects[MAX_MOUNTED_VOLUME_DRIVE_NUMBER + 1]; +BOOL AlignValue (ULONG ulValue, ULONG ulAlignment, ULONG *pulResult) +{ + BOOL bRet = FALSE; + HRESULT hr; + if (ulAlignment == 0) + { + *pulResult = ulValue; + bRet = TRUE; + } + else + { + ulAlignment -= 1; + hr = ULongAdd (ulValue, ulAlignment, &ulValue); + if (S_OK == hr) + { + *pulResult = ulValue & (~ulAlignment); + bRet = TRUE; + } + } + + return bRet; +} + BOOL IsUefiBoot () { BOOL bStatus = FALSE; @@ -1690,7 +1713,7 @@ NTSTATUS ProcessVolumeDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION ULONG ulNewInputLength = 0; BOOL bForwardIoctl = FALSE; - if (inputLength >= minSizeGeneric && inputLength >= minSizedataSet && inputLength >= minSizeParameter) + if (((ULONGLONG) inputLength) >= minSizeGeneric && ((ULONGLONG) inputLength) >= minSizedataSet && ((ULONGLONG) inputLength) >= minSizeParameter) { if (bEntireSet) { @@ -1702,36 +1725,53 @@ NTSTATUS ProcessVolumeDeviceControlIrp (PDEVICE_OBJECT DeviceObject, PEXTENSION } else { - DWORD dwDataSetOffset = ALIGN_VALUE (inputLength, sizeof(DEVICE_DATA_SET_RANGE)); + DWORD dwDataSetOffset; DWORD dwDataSetLength = sizeof(DEVICE_DATA_SET_RANGE); - Dump ("ProcessVolumeDeviceControlIrp: IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES - DEVICE_DSM_FLAG_ENTIRE_DATA_SET_RANGE set. Setting data range to all volume.\n"); - - ulNewInputLength = dwDataSetOffset + dwDataSetLength; - pNewSetAttrs = (PDEVICE_MANAGE_DATA_SET_ATTRIBUTES) TCalloc (ulNewInputLength); - if (pNewSetAttrs) + if (AlignValue (inputLength, sizeof(DEVICE_DATA_SET_RANGE), &dwDataSetOffset)) { - PDEVICE_DATA_SET_RANGE pRange = (PDEVICE_DATA_SET_RANGE) (((unsigned char*) pNewSetAttrs) + dwDataSetOffset); + Dump ("ProcessVolumeDeviceControlIrp: IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES - DEVICE_DSM_FLAG_ENTIRE_DATA_SET_RANGE set. Setting data range to all volume.\n"); - memcpy (pNewSetAttrs, pInputAttrs, inputLength); + if (S_OK == ULongAdd(dwDataSetOffset, dwDataSetLength, &ulNewInputLength)) + { + pNewSetAttrs = (PDEVICE_MANAGE_DATA_SET_ATTRIBUTES) TCalloc (ulNewInputLength); + if (pNewSetAttrs) + { + PDEVICE_DATA_SET_RANGE pRange = (PDEVICE_DATA_SET_RANGE) (((unsigned char*) pNewSetAttrs) + dwDataSetOffset); - pRange->StartingOffset = (ULONGLONG) Extension->cryptoInfo->hiddenVolume ? Extension->cryptoInfo->hiddenVolumeOffset : Extension->cryptoInfo->volDataAreaOffset; - pRange->LengthInBytes = Extension->DiskLength; + memcpy (pNewSetAttrs, pInputAttrs, inputLength); - pNewSetAttrs->Size = sizeof(DEVICE_MANAGE_DATA_SET_ATTRIBUTES); - pNewSetAttrs->Action = action; - pNewSetAttrs->Flags = pInputAttrs->Flags & (~DEVICE_DSM_FLAG_ENTIRE_DATA_SET_RANGE); - pNewSetAttrs->ParameterBlockOffset = pInputAttrs->ParameterBlockOffset; - pNewSetAttrs->ParameterBlockLength = pInputAttrs->ParameterBlockLength; - pNewSetAttrs->DataSetRangesOffset = dwDataSetOffset; - pNewSetAttrs->DataSetRangesLength = dwDataSetLength; + pRange->StartingOffset = (ULONGLONG) Extension->cryptoInfo->hiddenVolume ? Extension->cryptoInfo->hiddenVolumeOffset : Extension->cryptoInfo->volDataAreaOffset; + pRange->LengthInBytes = Extension->DiskLength; - bForwardIoctl = TRUE; + pNewSetAttrs->Size = sizeof(DEVICE_MANAGE_DATA_SET_ATTRIBUTES); + pNewSetAttrs->Action = action; + pNewSetAttrs->Flags = pInputAttrs->Flags & (~DEVICE_DSM_FLAG_ENTIRE_DATA_SET_RANGE); + pNewSetAttrs->ParameterBlockOffset = pInputAttrs->ParameterBlockOffset; + pNewSetAttrs->ParameterBlockLength = pInputAttrs->ParameterBlockLength; + pNewSetAttrs->DataSetRangesOffset = dwDataSetOffset; + pNewSetAttrs->DataSetRangesLength = dwDataSetLength; + + bForwardIoctl = TRUE; + } + else + { + Dump ("ProcessVolumeDeviceControlIrp: IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES - Failed to allocate memory.\n"); + Irp->IoStatus.Status = STATUS_INSUFFICIENT_RESOURCES; + Irp->IoStatus.Information = 0; + } + } + else + { + Dump ("ProcessVolumeDeviceControlIrp: IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES - DEVICE_DSM_FLAG_ENTIRE_DATA_SET_RANGE set but data range length computation overflowed.\n"); + Irp->IoStatus.Status = STATUS_INVALID_PARAMETER; + Irp->IoStatus.Information = 0; + } } else { - Dump ("ProcessVolumeDeviceControlIrp: IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES - Failed to allocate memory.\n"); - Irp->IoStatus.Status = STATUS_INSUFFICIENT_RESOURCES; + Dump ("ProcessVolumeDeviceControlIrp: IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES - DEVICE_DSM_FLAG_ENTIRE_DATA_SET_RANGE set but data set offset computation overflowed.\n"); + Irp->IoStatus.Status = STATUS_INVALID_PARAMETER; Irp->IoStatus.Information = 0; } } |