CVE-2021-29614 (High) detected in tensorflow_gpu-2.0.3-cp37-cp37m-manylinux2010_x86_64.whl, tensorflow-2.2.1-cp37-cp37m-manylinux2010_x86_64.whl

[mend-for-github-com]

CVE-2021-29614 - High Severity Vulnerability

Vulnerable Libraries - tensorflow_gpu-2.0.3-cp37-cp37m-manylinux2010_x86_64.whl, tensorflow-2.2.1-cp37-cp37m-manylinux2010_x86_64.whl

tensorflow_gpu-2.0.3-cp37-cp37m-manylinux2010_x86_64.whl

TensorFlow is an open source machine learning framework for everyone.

Library home page: https://files.pythonhosted.org/packages/a0/41/2f957b293fa90c083f8c02d3f05b47494e3ff8d64410ce7ca30200f13739/tensorflow_gpu-2.0.3-cp37-cp37m-manylinux2010_x86_64.whl

Path to dependency file: /examples/notebooks/tf_2_0/requirements.txt

Path to vulnerable library: /examples/notebooks/tf_2_0/requirements.txt

Dependency Hierarchy:

• ❌ tensorflow_gpu-2.0.3-cp37-cp37m-manylinux2010_x86_64.whl (Vulnerable Library)

tensorflow-2.2.1-cp37-cp37m-manylinux2010_x86_64.whl

TensorFlow is an open source machine learning framework for everyone.

Library home page: https://files.pythonhosted.org/packages/d5/09/4c7f73c263f23a568cd7d3fe56f0daa9a1eaadee603e1e05386b862ffa91/tensorflow-2.2.1-cp37-cp37m-manylinux2010_x86_64.whl

Path to dependency file: /examples/notebooks/tf_2_2/requirements.txt

Path to vulnerable library: /examples/notebooks/tf_2_2/requirements.txt

Dependency Hierarchy:

• ❌ tensorflow-2.2.1-cp37-cp37m-manylinux2010_x86_64.whl (Vulnerable Library)

Found in HEAD commit: 4e3aa8327ca6834d417f1c7de964019ba75cc2d1

Vulnerability Details

TensorFlow is an end-to-end open source platform for machine learning. The implementation of tf.io.decode_raw produces incorrect results and crashes the Python interpreter when combining fixed_length and wider datatypes. The implementation of the padded version(https://github.com/tensorflow/tensorflow/blob/1d8903e5b167ed0432077a3db6e462daf781d1fe/tensorflow/core/kernels/decode_padded_raw_op.cc) is buggy due to a confusion about pointer arithmetic rules. First, the code computes(https://github.com/tensorflow/tensorflow/blob/1d8903e5b167ed0432077a3db6e462daf781d1fe/tensorflow/core/kernels/decode_padded_raw_op.cc#L61) the width of each output element by dividing the fixed_length value to the size of the type argument. The fixed_length argument is also used to determine the size needed for the output tensor(https://github.com/tensorflow/tensorflow/blob/1d8903e5b167ed0432077a3db6e462daf781d1fe/tensorflow/core/kernels/decode_padded_raw_op.cc#L63-L79). This is followed by reencoding code(https://github.com/tensorflow/tensorflow/blob/1d8903e5b167ed0432077a3db6e462daf781d1fe/tensorflow/core/kernels/decode_padded_raw_op.cc#L85-L94). The erroneous code is the last line above: it is moving the out_data pointer by fixed_length * sizeof(T) bytes whereas it only copied at most fixed_length bytes from the input. This results in parts of the input not being decoded into the output. Furthermore, because the pointer advance is far wider than desired, this quickly leads to writing to outside the bounds of the backing data. This OOB write leads to interpreter crash in the reproducer mentioned here, but more severe attacks can be mounted too, given that this gadget allows writing to periodically placed locations in memory. 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.

Publish Date: 2021-05-14

URL: CVE-2021-29614

CVSS 3 Score Details (7.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-8pmx-p244-g88h

Release Date: 2021-05-14

Fix Resolution: tensorflow - 2.5.0, tensorflow-cpu - 2.5.0, tensorflow-gpu - 2.5.0