id: PYSEC-2021-577
details: TensorFlow is an end-to-end open source platform for machine learning. In
  affected versions an attacker can read from outside of bounds of heap allocated
  data by sending specially crafted illegal arguments to `BoostedTreesSparseCalculateBestFeatureSplit`.
  The [implementation](https://github.com/tensorflow/tensorflow/blob/84d053187cb80d975ef2b9684d4b61981bca0c41/tensorflow/core/kernels/boosted_trees/stats_ops.cc)
  needs to validate that each value in `stats_summary_indices` is in range. We have
  patched the issue in GitHub commit e84c975313e8e8e38bb2ea118196369c45c51378. The
  fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on
  TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, 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: e84c975313e8e8e38bb2ea118196369c45c51378
  - type: ECOSYSTEM
    events:
    - introduced: 2.3.0
    - fixed: 2.3.4
    - introduced: 2.4.0
    - fixed: 2.4.3
  versions:
  - 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-r4c4-5fpq-56wg
- type: FIX
  url: https://github.com/tensorflow/tensorflow/commit/e84c975313e8e8e38bb2ea118196369c45c51378
aliases:
- CVE-2021-37664
- GHSA-r4c4-5fpq-56wg
modified: "2021-12-09T06:35:04.439609Z"
published: "2021-08-12T21:15:00Z"