id: PYSEC-2020-280
details: In Tensorflow before version 2.3.1, the `RaggedCountSparseOutput` implementation
  does not validate that the input arguments form a valid ragged tensor. In particular,
  there is no validation that the values in the `splits` tensor generate a valid partitioning
  of the `values` tensor. Thus, the code sets up conditions to cause a heap buffer
  overflow. A `BatchedMap` is equivalent to a vector where each element is a hashmap.
  However, if the first element of `splits_values` is not 0, `batch_idx` will never
  be 1, hence there will be no hashmap at index 0 in `per_batch_counts`. Trying to
  access that in the user code results in a segmentation fault. The issue is patched
  in commit 3cbb917b4714766030b28eba9fb41bb97ce9ee02 and is released in TensorFlow
  version 2.3.1.
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: 3cbb917b4714766030b28eba9fb41bb97ce9ee02
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 2.3.1
  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
references:
- type: ADVISORY
  url: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-x7rp-74x2-mjf3
- type: WEB
  url: https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1
- type: FIX
  url: https://github.com/tensorflow/tensorflow/commit/3cbb917b4714766030b28eba9fb41bb97ce9ee02
aliases:
- CVE-2020-15200
- GHSA-x7rp-74x2-mjf3
modified: "2021-12-09T06:34:41.630526Z"
published: "2020-09-25T19:15:00Z"