Impact
The implementation of the DepthToSpace TFLite operator is vulnerable to a division by zero error:
const int block_size = params->block_size;
...
const int input_channels = input->dims->data[3];
...
int output_channels = input_channels / block_size / block_size;
An attacker can craft a model such that params->block_size is 0.
Patches
We have patched the issue in GitHub commit 106d8f4fb89335a2c52d7c895b7a7485465ca8d9.
The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
For more information
Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.
Attribution
This vulnerability has been reported by members of the Aivul Team from Qihoo 360.
Impact
The implementation of the
DepthToSpaceTFLite operator is vulnerable to a division by zero error:An attacker can craft a model such that
params->block_sizeis 0.Patches
We have patched the issue in GitHub commit 106d8f4fb89335a2c52d7c895b7a7485465ca8d9.
The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
For more information
Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.
Attribution
This vulnerability has been reported by members of the Aivul Team from Qihoo 360.