id: PYSEC-2021-496
details: TensorFlow is an end-to-end open source platform for machine learning. An
  attacker can trigger undefined behavior by binding to null pointer in `tf.raw_ops.ParameterizedTruncatedNormal`.
  This is because the implementation(https://github.com/tensorflow/tensorflow/blob/3f6fe4dfef6f57e768260b48166c27d148f3015f/tensorflow/core/kernels/parameterized_truncated_normal_op.cc#L630)
  does not validate input arguments before accessing the first element of `shape`.
  If `shape` argument is empty, then `shape_tensor.flat<T>()` is an empty array. 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: 5e52ef5a461570cfb68f3bdbbebfe972cb4e0fd8
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 2.2.0rc0
    - introduced: 2.2.0
    - fixed: 2.3.0rc0
    - introduced: 2.3.0
    - fixed: 2.3.4
    - introduced: 2.4.0
    - fixed: 2.4.3
  versions:
  - 1.15.0
  - 2.1.0
  - 2.1.1
  - 2.1.2
  - 2.1.3
  - 2.1.4
  - 2.2.0
  - 2.2.1
  - 2.2.2
  - 2.2.3
  - 2.3.0
  - 2.3.1
  - 2.3.2
  - 2.3.3
  - 2.4.0
  - 2.4.1
  - 2.4.2
references:
- type: ADVISORY
  url: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-4p4p-www8-8fv9
- type: FIX
  url: https://github.com/tensorflow/tensorflow/commit/5e52ef5a461570cfb68f3bdbbebfe972cb4e0fd8
aliases:
- CVE-2021-29568
- GHSA-4p4p-www8-8fv9
modified: "2021-12-09T06:34:53.905703Z"
published: "2021-05-14T20:15:00Z"