id: PYSEC-2021-727
details: TensorFlow is an end-to-end open source platform for machine learning. The
  TFLite implementation of concatenation is vulnerable to an integer overflow issue(https://github.com/tensorflow/tensorflow/blob/7b7352a724b690b11bfaae2cd54bc3907daf6285/tensorflow/lite/kernels/concatenation.cc#L70-L76).
  An attacker can craft a model such that the dimensions of one of the concatenation
  input overflow the values of `int`. TFLite uses `int` to represent tensor dimensions,
  whereas TF uses `int64`. Hence, valid TF models can trigger an integer overflow
  when converted to TFLite format. 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-gpu
    ecosystem: PyPI
    purl: pkg:pypi/tensorflow-gpu
  ranges:
  - type: GIT
    repo: https://github.com/tensorflow/tensorflow
    events:
    - introduced: "0"
    - fixed: 4253f96a58486ffe84b61c0415bb234a4632ee73
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 2.1.4
    - introduced: 2.2.0
    - fixed: 2.2.3
    - introduced: 2.3.0
    - fixed: 2.3.3
    - introduced: 2.4.0
    - fixed: 2.4.2
  versions:
  - 0.12.0
  - 0.12.1
  - 1.0.0
  - 1.0.1
  - 1.1.0
  - 1.10.0
  - 1.10.1
  - 1.11.0
  - 1.12.0
  - 1.12.2
  - 1.12.3
  - 1.13.1
  - 1.13.2
  - 1.14.0
  - 1.15.0
  - 1.15.2
  - 1.15.3
  - 1.15.4
  - 1.15.5
  - 1.2.0
  - 1.2.1
  - 1.3.0
  - 1.4.0
  - 1.4.1
  - 1.5.0
  - 1.5.1
  - 1.6.0
  - 1.7.0
  - 1.7.1
  - 1.8.0
  - 1.9.0
  - 2.0.0
  - 2.0.1
  - 2.0.2
  - 2.0.3
  - 2.0.4
  - 2.1.0
  - 2.1.1
  - 2.1.2
  - 2.1.3
  - 2.2.0
  - 2.2.1
  - 2.2.2
  - 2.3.0
  - 2.3.1
  - 2.3.2
  - 2.4.0
  - 2.4.1
references:
- type: ADVISORY
  url: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-9c84-4hx6-xmm4
- type: FIX
  url: https://github.com/tensorflow/tensorflow/commit/4253f96a58486ffe84b61c0415bb234a4632ee73
aliases:
- CVE-2021-29601
- GHSA-9c84-4hx6-xmm4
modified: "2021-12-09T06:35:32.210068Z"
published: "2021-05-14T20:15:00Z"