id: PYSEC-2020-287
details: In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1,
  to mimic Python's indexing with negative values, TFLite uses `ResolveAxis` to convert
  negative values to positive indices. However, the only check that the converted
  index is now valid is only present in debug builds. If the `DCHECK` does not trigger,
  then code execution moves ahead with a negative index. This, in turn, results in
  accessing data out of bounds which results in segfaults and/or data corruption.
  The issue is patched in commit 2d88f470dea2671b430884260f3626b1fe99830a, and is
  released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 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: 2d88f470dea2671b430884260f3626b1fe99830a
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 1.15.4
    - introduced: 2.0.0
    - fixed: 2.0.3
    - introduced: 2.1.0
    - fixed: 2.1.2
    - introduced: 2.2.0
    - fixed: 2.2.1
    - introduced: 2.3.0
    - fixed: 2.3.1
  versions:
  - 1.15.0
  - 2.1.0
  - 2.1.1
  - 2.2.0
  - 2.3.0
references:
- type: FIX
  url: https://github.com/tensorflow/tensorflow/commit/2d88f470dea2671b430884260f3626b1fe99830a
- type: ADVISORY
  url: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-q4qf-3fc6-8x34
- type: WEB
  url: https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1
- type: WEB
  url: http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00065.html
aliases:
- CVE-2020-15207
- GHSA-q4qf-3fc6-8x34
modified: "2021-12-09T06:34:42.836592Z"
published: "2020-09-25T19:15:00Z"