CVE-2022-29204

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CVE-2022-29204

Summary: Missing validation causes denial of service in TensorFlow via `Conv3DBackpropFilterV2`

Details: TensorFlow is an open source platform for machine learning. Prior to versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4, the implementation of `tf.raw_ops.UnsortedSegmentJoin` does not fully validate the input arguments. This results in a `CHECK`-failure which can be used to trigger a denial of service attack. The code assumes `num_segments` is a positive scalar but there is no validation. Since this value is used to allocate the output tensor, a negative value would result in a `CHECK`-failure (assertion failure), as per TFSA-2021-198. Versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4 contain a patch for this issue.

References: https://github.com/tensorflow/tensorflow/blob/f3b9bf4c3c0597563b289c0512e98d4ce81f886e/tensorflow/core/kernels/unsorted_segment_join_op.cc#L83-L14, https://github.com/tensorflow/tensorflow/releases/tag/v2.6.4, https://github.com/tensorflow/tensorflow/releases/tag/v2.7.2, https://github.com/tensorflow/tensorflow/releases/tag/v2.8.1, https://github.com/tensorflow/tensorflow/releases/tag/v2.9.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/29xxx/CVE-2022-29204.json, https://github.com/tensorflow/tensorflow/blob/master/tensorflow/security/advisory/tfsa-2021-198.md, https://github.com/tensorflow/tensorflow/security/advisories/GHSA-hx9q-2mx4-m4pg, https://nvd.nist.gov/vuln/detail/CVE-2022-29204, https://github.com/tensorflow/tensorflow/commit/20cb18724b0bf6c09071a3f53434c4eec53cc147, https://github.com/tensorflow/tensorflow/commit/84563f265f28b3c36a15335c8b005d405260e943