CVE-2021-41200: Incomplete validation in `tf.summary.create_file_writer`
First published: Fri Nov 05 2021(Updated: )
### Impact If `tf.summary.create_file_writer` is called with non-scalar arguments code crashes due to a `CHECK`-fail. ```python import tensorflow as tf import numpy as np tf.summary.create_file_writer(logdir='', flush_millis=np.ones((1,2))) ``` ### Patches We have patched the issue in GitHub commit [874bda09e6702cd50bac90b453b50bcc65b2769e](https://github.com/tensorflow/tensorflow/commit/874bda09e6702cd50bac90b453b50bcc65b2769e) (merging [#51715](https://github.com/tensorflow/tensorflow/pull/51715)). The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range. ### For more information Please consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions. ### Attribution This vulnerability has been reported externally via a [GitHub issue](https://github.com/tensorflow/tensorflow/issues/46909).
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/tensorflow-gpu | <2.4.4 | 2.4.4 |
| pip/tensorflow-gpu | >=2.5.0<2.5.2 | 2.5.2 |
| pip/tensorflow-gpu | >=2.6.0<2.6.1 | 2.6.1 |
| pip/tensorflow-cpu | <2.4.4 | 2.4.4 |
| pip/tensorflow-cpu | >=2.5.0<2.5.2 | 2.5.2 |
| pip/tensorflow-cpu | >=2.6.0<2.6.1 | 2.6.1 |
| pip/tensorflow | <2.4.4 | 2.4.4 |
| pip/tensorflow | >=2.5.0<2.5.2 | 2.5.2 |
| pip/tensorflow | >=2.6.0<2.6.1 | 2.6.1 |
| TensorFlow Keras | <2.4.4 | |
| TensorFlow Keras | >=2.5.0<2.5.2 | |
| TensorFlow Keras | =2.6.0 |
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Reference Links
- https://github.com/tensorflow/tensorflow/commit/874bda09e6702cd50bac90b453b50bcc65b2769e
- https://github.com/tensorflow/tensorflow/issues/46909
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-gh8h-7j2j-qv4f
- https://nvd.nist.gov/vuln/detail/CVE-2021-41200
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-610.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-808.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-393.yaml
- https://github.com/advisories/GHSA-gh8h-7j2j-qv4f (Advisory)
Frequently Asked Questions
What is the severity of CVE-2021-41200?
The severity of CVE-2021-41200 is classified as medium due to the potential for application crashes.
How do I fix CVE-2021-41200?
To fix CVE-2021-41200, update TensorFlow to version 2.4.4, 2.5.2, or 2.6.1 or later.
What is CVE-2021-41200?
CVE-2021-41200 is a vulnerability in TensorFlow that causes a crash when non-scalar arguments are passed to tf.summary.create_file_writer.
Which versions of TensorFlow are affected by CVE-2021-41200?
Versions of TensorFlow prior to 2.4.4 and between 2.5.0 and 2.5.2 and between 2.6.0 and 2.6.1 are affected by CVE-2021-41200.
What components are impacted by CVE-2021-41200?
CVE-2021-41200 impacts the TensorFlow GPU, CPU, and the TensorFlow Keras libraries.
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