# CVE-2020-15194: Denial of Service in Tensorflow

Source: https://junglewise.ai/threats/cve-2020-15194-denial-of-service-in-tensorflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2020-09-25  
License: CC BY 4.0 with a link back

CVE-2020-15194 · Severity: low · CVSS 3.1 · Published 2020-09-25

In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, the `SparseFillEmptyRowsGrad` implementation has incomplete validation of the shapes of its arguments. Although `reverse_index_map_t` and `grad_values_t` are accessed in a similar pattern, only `reverse_index_map_t` is validated to be of proper shape. Hence, malicious users can pass a bad `grad_values_t` to trigger an assertion failure in `vec`, causing denial of service in serving installations. The issue is patched in commit 390611e0d45c5793c7066110af37c8514e6a6c54, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1."

Technologies: [tensorflow (PyPI)](https://junglewise.ai/threats/technologies/pypi-tensorflow), [tensorflow-cpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-cpu), [tensorflow-gpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-gpu). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2020-15194 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-15194 being exploited in the wild.

**How severe is CVE-2020-15194?** Low severity, with a CVSS score of 3.1, published 25 September 2020.

**Which products and versions are affected?** tensorflow (PyPI) ECOSYSTEM:introduced=0,fixed=1.15.4, GIT:introduced=0,fixed=390611e0d45c5793c7066110af37c8514e6a6c54|ECOSYSTEM: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; tensorflow-cpu (PyPI) ECOSYSTEM:introduced=0,fixed=1.15.4, GIT:introduced=0,fixed=390611e0d45c5793c7066110af37c8514e6a6c54|ECOSYSTEM: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; tensorflow-gpu (PyPI) ECOSYSTEM:introduced=0,fixed=1.15.4, GIT:introduced=0,fixed=390611e0d45c5793c7066110af37c8514e6a6c54|ECOSYSTEM: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.

**Is there a fix for CVE-2020-15194?** Yes. tensorflow (PyPI): upgrade to 1.15.4, 2.3.1 or later; tensorflow-cpu (PyPI): upgrade to 1.15.4, 2.3.1 or later; tensorflow-gpu (PyPI): upgrade to 1.15.4, 2.3.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2020-15194?** Check whether you run tensorflow (PyPI), tensorflow-cpu (PyPI) or tensorflow-gpu (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- tensorflow (PyPI): upgrade to 1.15.4, 2.3.1 or later

  ```sh
  pip install "tensorflow>=2.3.1"
  ```

- tensorflow-cpu (PyPI): upgrade to 1.15.4, 2.3.1 or later

  ```sh
  pip install "tensorflow-cpu>=2.3.1"
  ```

- tensorflow-gpu (PyPI): upgrade to 1.15.4, 2.3.1 or later

  ```sh
  pip install "tensorflow-gpu>=2.3.1"
  ```


## Affected products

- tensorflow (PyPI) ECOSYSTEM:introduced=0,fixed=1.15.4, GIT:introduced=0,fixed=390611e0d45c5793c7066110af37c8514e6a6c54|ECOSYSTEM: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
- tensorflow-cpu (PyPI) ECOSYSTEM:introduced=0,fixed=1.15.4, GIT:introduced=0,fixed=390611e0d45c5793c7066110af37c8514e6a6c54|ECOSYSTEM: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
- tensorflow-gpu (PyPI) ECOSYSTEM:introduced=0,fixed=1.15.4, GIT:introduced=0,fixed=390611e0d45c5793c7066110af37c8514e6a6c54|ECOSYSTEM: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

## Identifiers

- CVE-2020-15194
- GHSA-9mqp-7v2h-2382
- PYSEC-2020-117
- PYSEC-2020-274
- PYSEC-2020-309

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