CVE-2021-41228 Code injection in `saved_model_cli`
Attackers can execute arbitrary code via the saved_model_cli tool due to unsafe eval usage, requiring manual execution of the CLI.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-41228?
CVE-2021-41228 is a high-severity code injection vulnerability in Google Tensorflow, published on 5 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
TensorFlow is an open source platform for machine learning. In affected versions TensorFlow's `saved_model_cli` tool is vulnerable to a code injection as it calls `eval` on user supplied strings. This can be used by attackers to run arbitrary code on the plaform where the CLI tool runs. However, given that the tool is always run manually, the impact of this is not severe. We have patched this by adding a `safe` flag which defaults to `True` and an explicit warning for users. 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.
Which versions are affected by CVE-2021-41228?
22 open source packages ship an affected version, including tensorflow, tensorflow-cpu and tensorflow-gpu. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
tensorflow Bitnami | From 2.4.0 | 2.4.4, 2.5.2, 2.6.1 |
tensorflow PyPI | All versions | 2.4.4, 2.5.2, 2.6.1, 2.7.0 |
tensorflow PyPI | All versions | 2.4.4 |
tensorflow PyPI | All versions | 2.4.4 |
tensorflow PyPI | From 2.5.0 | 2.5.2 |
tensorflow PyPI | From 2.5.0 | 2.5.2 |
16 more packages
tensorflow PyPI | From 2.6.0 | 2.6.1 |
tensorflow PyPI | From 2.6.0 | 2.6.1 |
tensorflow-cpu PyPI | All versions | 2.4.4, 2.5.2, 2.6.1, 2.7.0 |
tensorflow-cpu PyPI | All versions | 2.4.4 |
tensorflow-cpu PyPI | All versions | 2.4.4 |
tensorflow-cpu PyPI | From 2.5.0 | 2.5.2 |
tensorflow-cpu PyPI | From 2.5.0 | 2.5.2 |
tensorflow-cpu PyPI | From 2.6.0 | 2.6.1 |
tensorflow-cpu PyPI | From 2.6.0 | 2.6.1 |
tensorflow-gpu PyPI | All versions | 2.4.4, 2.5.2, 2.6.1, 2.7.0 |
tensorflow-gpu PyPI | All versions | 2.4.4 |
tensorflow-gpu PyPI | All versions | 2.4.4 |
tensorflow-gpu PyPI | From 2.5.0 | 2.5.2 |
tensorflow-gpu PyPI | From 2.5.0 | 2.5.2 |
tensorflow-gpu PyPI | From 2.6.0 | 2.6.1 |
tensorflow-gpu PyPI | From 2.6.0 | 2.6.1 |
Products include Google Tensorflow.
How do I fix CVE-2021-41228?
Upgrade tensorflow to a fixed version for your release line: 2.4.4, 2.5.2, 2.6.1 or 2.7.0.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2021-41228 being exploited?
There is no known exploitation of CVE-2021-41228 in the wild and no public exploit code.
Other vulnerabilities in Google Tensorflow
- CVE-2023-25668 TensorFlow vulnerable to heap out-of-buffer read in the QuantizeAndDequantize operation
- CVE-2018-7575 Integer Overflow or Wraparound in Google TensorFlow
- CVE-2021-37678 Arbitrary code execution due to YAML deserialization
- CVE-2021-35958 Path traversal in n/a
- CVE-2020-15202 Integer truncation in Shard API usage
Sources
Also known as BIT-tensorflow-2021-41228, GHSA-3rcw-9p9x-582v, PYSEC-2021-420, PYSEC-2021-637, PYSEC-2021-835.