id: PYSEC-2020-289
details: In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1,
  a crafted TFLite model can force a node to have as input a tensor backed by a `nullptr`
  buffer. This can be achieved by changing a buffer index in the flatbuffer serialization
  to convert a read-only tensor to a read-write one. The runtime assumes that these
  buffers are written to before a possible read, hence they are initialized with `nullptr`.
  However, by changing the buffer index for a tensor and implicitly converting that
  tensor to be a read-write one, as there is nothing in the model that writes to it,
  we get a null pointer dereference. The issue is patched in commit 0b5662bc, 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: 0b5662bc2be13a8c8f044d925d87fb6e56247cd8
  - 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: ADVISORY
  url: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-qh32-6jjc-qprm
- type: FIX
  url: https://github.com/tensorflow/tensorflow/commit/0b5662bc2be13a8c8f044d925d87fb6e56247cd8
- 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-2020-15209
- GHSA-qh32-6jjc-qprm
modified: "2021-12-09T06:34:43.227280Z"
published: "2020-09-25T19:15:00Z"