QID 982445

QID 982445: Python (pip) Security Update for tensorflow-gpu (GHSA-mq5c-prh3-3f3h)

Security update has been released for tensorflow,tensorflow-cpu,tensorflow-gpu to fix the vulnerability.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

The validation in `tf.raw_ops.QuantizeAndDequantizeV2` allows invalid values for `axis` argument:

```python
import tensorflow as tf

input_tensor = tf.constant([0.0], shape=[1], dtype=float)
input_min = tf.constant(-10.0)
input_max = tf.constant(-10.0)

tf.raw_ops.QuantizeAndDequantizeV2(
input=input_tensor, input_min=input_min, input_max=input_max,
signed_input=False, num_bits=1, range_given=False, round_mode='HALF_TO_EVEN',
narrow_range=False, axis=-2)
```

The [validation](https://github.com/tensorflow/tensorflow/blob/eccb7ec454e6617738554a255d77f08e60ee0808/tensorflow/core/kernels/quantize_and_dequantize_op.cc#L74-L77) uses `||` to mix two different conditions:

```cc
OP_REQUIRES(ctx,
(axis_ == -1 || axis_ < input.shape().dims()),
errors::InvalidArgument(...));
```

If `axis_ < -1` the condition in `OP_REQUIRES` will still be true, but this value of `axis_` results in heap underflow. This allows attackers to read/write to other data on the heap.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Medium - 4.6 severity.
  • Solution
    We have patched the issue in GitHub commit [c5b0d5f8ac19888e46ca14b0e27562e7fbbee9a9](https://github.com/tensorflow/tensorflow/commit/c5b0d5f8ac19888e46ca14b0e27562e7fbbee9a9).

    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.
    Vendor References

    CVEs related to QID 982445

    Software Advisories
    Advisory ID Software Component Link
    GHSA-mq5c-prh3-3f3h tensorflow URL Logo github.com/advisories/GHSA-mq5c-prh3-3f3h
    GHSA-mq5c-prh3-3f3h tensorflow-cpu URL Logo github.com/advisories/GHSA-mq5c-prh3-3f3h
    GHSA-mq5c-prh3-3f3h tensorflow-gpu URL Logo github.com/advisories/GHSA-mq5c-prh3-3f3h

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