Vulnerability · Published Aug 12, 2021 · Assigned by GitHub_M
CVE-2021-37682Use of unitialized value in TensorFlow Lite
Medium 4.4
In plain English
A medium-severity security flaw in tensorflow from tensorflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
TensorFlow is an end-to-end open source platform for machine learning. In affected versions all TFLite operations that use quantization can be made to use unitialized values. [For example](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/lite/kernels/depthwise_conv.cc#L198-L200). The issue stems from the fact that `quantization.params` is only valid if `quantization.type` is different that `kTfLiteNoQuantization`. However, these checks are missing in large parts of the code. We have patched the issue in GitHub commits 537bc7c723439b9194a358f64d871dd326c18887, 4a91f2069f7145aab6ba2d8cfe41be8a110c18a5 and 8933b8a21280696ab119b63263babdb54c298538. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | tensorflow | 2.3.4, 2.4.3 | PYSEC-2021-304 |
| PyPI | tensorflow | 2.3.4 | GHSA-4c4g-crqm-xrxw |
| PyPI | tensorflow | 2.4.3 | GHSA-4c4g-crqm-xrxw |
| PyPI | tensorflow | 2.5.1 | GHSA-4c4g-crqm-xrxw |
| PyPI | tensorflow-cpu | 2.4.3 | GHSA-4c4g-crqm-xrxw |
| PyPI | tensorflow-cpu | 2.3.4, 2.4.3 | PYSEC-2021-595 |
| PyPI | tensorflow-cpu | 2.3.4 | GHSA-4c4g-crqm-xrxw |
| PyPI | tensorflow-cpu | 2.5.1 | GHSA-4c4g-crqm-xrxw |
| PyPI | tensorflow-gpu | 2.3.4, 2.4.3 | PYSEC-2021-793 |
| PyPI | tensorflow-gpu | 2.3.4 | GHSA-4c4g-crqm-xrxw |
| PyPI | tensorflow-gpu | 2.4.3 | GHSA-4c4g-crqm-xrxw |
| PyPI | tensorflow-gpu | 2.5.1 | GHSA-4c4g-crqm-xrxw |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tensorflow | tensorflow | >= 2.5.0, < 2.5.1>= 2.4.0, < 2.4.3< 2.3.4 |
Weakness: CWE-908 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
References
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-4c4g-crqm-xrxw x_refsource_CONFIRM
- https://github.com/tensorflow/tensorflow/commit/4a91f2069f7145aab6ba2d8cfe41be8a110c18a5 x_refsource_MISC
- https://github.com/tensorflow/tensorflow/commit/537bc7c723439b9194a358f64d871dd326c18887 x_refsource_MISC
- https://github.com/tensorflow/tensorflow/commit/8933b8a21280696ab119b63263babdb54c298538 x_refsource_MISC