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  5. CVE-2021-37667

CVE-2021-37667: Reference binding to nullptr in unicode encoding

August 25, 2021 (updated November 13, 2024)

An attacker can cause undefined behavior via binding a reference to null pointer in tf.raw_ops.UnicodeEncode:

import tensorflow as tf
from tensorflow.python.ops import gen_string_ops

gen_string_ops.unicode_encode(
input_values=[],
input_splits=[],
output_encoding='UTF-8',
errors='ignore',
replacement_char='a')

References

  • github.com/advisories/GHSA-w74j-v8xh-3w5h
  • github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-580.yaml
  • github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-778.yaml
  • github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-289.yaml
  • github.com/tensorflow/tensorflow
  • github.com/tensorflow/tensorflow/commit/2e0ee46f1a47675152d3d865797a18358881d7a6
  • github.com/tensorflow/tensorflow/security/advisories/GHSA-w74j-v8xh-3w5h
  • nvd.nist.gov/vuln/detail/CVE-2021-37667

Code Behaviors & Features

Detect and mitigate CVE-2021-37667 with GitLab Dependency Scanning

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Affected versions

All versions before 2.3.4, all versions starting from 2.4.0 before 2.4.3, all versions starting from 2.5.0 before 2.5.1, version 2.5.0

Fixed versions

  • 2.3.4
  • 2.4.3
  • 2.5.1

Solution

Upgrade to versions 2.3.4, 2.4.3, 2.5.1 or above.

Impact 7.8 HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-824: Access of Uninitialized Pointer

Source file

pypi/tensorflow-gpu/CVE-2021-37667.yml

Spotted a mistake? Edit the file on GitLab.

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