id: PYSEC-2021-451
details: TensorFlow is an end-to-end open source platform for machine learning. An
  attacker can trigger a denial of service via a `CHECK`-fail in `tf.raw_ops.AddManySparseToTensorsMap`.
  This is because the implementation(https://github.com/tensorflow/tensorflow/blob/6f9896890c4c703ae0a0845394086e2e1e523299/tensorflow/core/kernels/sparse_tensors_map_ops.cc#L257)
  takes the values specified in `sparse_shape` as dimensions for the output shape.
  The `TensorShape` constructor(https://github.com/tensorflow/tensorflow/blob/6f9896890c4c703ae0a0845394086e2e1e523299/tensorflow/core/framework/tensor_shape.cc#L183-L188)
  uses a `CHECK` operation which triggers when `InitDims`(https://github.com/tensorflow/tensorflow/blob/6f9896890c4c703ae0a0845394086e2e1e523299/tensorflow/core/framework/tensor_shape.cc#L212-L296)
  returns a non-OK status. This is a legacy implementation of the constructor and
  operations should use `BuildTensorShapeBase` or `AddDimWithStatus` to prevent `CHECK`-failures
  in the presence of overflows. 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.
affected:
- package:
    name: tensorflow-cpu
    ecosystem: PyPI
    purl: pkg:pypi/tensorflow-cpu
  ranges:
  - type: GIT
    repo: https://github.com/tensorflow/tensorflow
    events:
    - introduced: "0"
    - fixed: 69c68ecbb24dff3fa0e46da0d16c821a2dd22d7c
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 2.1.4
    - introduced: 2.2.0
    - fixed: 2.2.3
    - introduced: 2.3.0
    - fixed: 2.3.3
    - introduced: 2.4.0
    - fixed: 2.4.2
  versions:
  - 1.15.0
  - 2.1.0
  - 2.1.1
  - 2.1.2
  - 2.1.3
  - 2.2.0
  - 2.2.1
  - 2.2.2
  - 2.3.0
  - 2.3.1
  - 2.3.2
  - 2.4.0
  - 2.4.1
references:
- type: FIX
  url: https://github.com/tensorflow/tensorflow/commit/69c68ecbb24dff3fa0e46da0d16c821a2dd22d7c
- type: ADVISORY
  url: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-2cpx-427x-q2c6
aliases:
- CVE-2021-29523
- GHSA-2cpx-427x-q2c6
modified: "2021-12-09T06:34:46.920888Z"
published: "2021-05-14T20:15:00Z"