Vulnerability · Published Aug 12, 2021 · Assigned by GitHub_M
CVE-2021-37641Heap OOB in `RaggedGather` in TensorFlow
High 7.3
In plain English
A high-severity out-of-bounds read 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 if the arguments to `tf.raw_ops.RaggedGather` don't determine a valid ragged tensor code can trigger a read from outside of bounds of heap allocated buffers. The [implementation](https://github.com/tensorflow/tensorflow/blob/8d72537c6abf5a44103b57b9c2e22c14f5f49698/tensorflow/core/kernels/ragged_gather_op.cc#L70) directly reads the first dimension of a tensor shape before checking that said tensor has rank of at least 1 (i.e., it is not a scalar). Furthermore, the implementation does not check that the list given by `params_nested_splits` is not an empty list of tensors. We have patched the issue in GitHub commit a2b743f6017d7b97af1fe49087ae15f0ac634373. 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-2021-263 |
| PyPI | tensorflow | 2.3.4 | GHSA-9c8h-vvrj-w2p8 |
| PyPI | tensorflow | 2.4.3 | GHSA-9c8h-vvrj-w2p8 |
| PyPI | tensorflow | 2.5.1 | GHSA-9c8h-vvrj-w2p8 |
| PyPI | tensorflow-cpu | 2.4.3 | GHSA-9c8h-vvrj-w2p8 |
| PyPI | tensorflow-cpu | 2.3.4, 2.4.3 | PYSEC-2021-554 |
| PyPI | tensorflow-cpu | 2.3.4 | GHSA-9c8h-vvrj-w2p8 |
| PyPI | tensorflow-cpu | 2.5.1 | GHSA-9c8h-vvrj-w2p8 |
| PyPI | tensorflow-gpu | 2.3.4, 2.4.3 | PYSEC-2021-752 |
| PyPI | tensorflow-gpu | 2.3.4 | GHSA-9c8h-vvrj-w2p8 |
| PyPI | tensorflow-gpu | 2.4.3 | GHSA-9c8h-vvrj-w2p8 |
| PyPI | tensorflow-gpu | 2.5.1 | GHSA-9c8h-vvrj-w2p8 |
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-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H