Vulnerability · Published Aug 12, 2021 · Assigned by GitHub_M
CVE-2021-37656Reference binding to nullptr in `RaggedTensorToSparse` in TensorFlow
High 7.1
In plain English
A high-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 6% 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 an attacker can cause undefined behavior via binding a reference to null pointer in `tf.raw_ops.RaggedTensorToSparse`. The [implementation](https://github.com/tensorflow/tensorflow/blob/f24faa153ad31a4b51578f8181d3aaab77a1ddeb/tensorflow/core/kernels/ragged_tensor_to_sparse_kernel.cc#L30) has an incomplete validation of the splits values: it does not check that they are in increasing order. We have patched the issue in GitHub commit 1071f554dbd09f7e101324d366eec5f4fe5a3ece. 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-2021-278 |
| PyPI | tensorflow | 2.3.4 | GHSA-4xfp-4pfp-89wg |
| PyPI | tensorflow | 2.4.3 | GHSA-4xfp-4pfp-89wg |
| PyPI | tensorflow | 2.5.1 | GHSA-4xfp-4pfp-89wg |
| PyPI | tensorflow-cpu | 2.4.3 | GHSA-4xfp-4pfp-89wg |
| PyPI | tensorflow-cpu | 2.3.4, 2.4.3 | PYSEC-2021-569 |
| PyPI | tensorflow-cpu | 2.3.4 | GHSA-4xfp-4pfp-89wg |
| PyPI | tensorflow-cpu | 2.5.1 | GHSA-4xfp-4pfp-89wg |
| PyPI | tensorflow-gpu | 2.3.4, 2.4.3 | PYSEC-2021-767 |
| PyPI | tensorflow-gpu | 2.3.4 | GHSA-4xfp-4pfp-89wg |
| PyPI | tensorflow-gpu | 2.4.3 | GHSA-4xfp-4pfp-89wg |
| PyPI | tensorflow-gpu | 2.5.1 | GHSA-4xfp-4pfp-89wg |
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-824 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H