Vulnerability · Published May 14, 2021 · Assigned by GitHub_M
CVE-2021-29566Heap OOB access in `Dilation2DBackpropInput`
Low 2.5
In plain English
A low-severity out-of-bounds write 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 10% 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. An attacker can write outside the bounds of heap allocated arrays by passing invalid arguments to `tf.raw_ops.Dilation2DBackpropInput`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/afd954e65f15aea4d438d0a219136fc4a63a573d/tensorflow/core/kernels/dilation_ops.cc#L321-L322) does not validate before writing to the output array. The values for `h_out` and `w_out` are guaranteed to be in range for `out_backprop` (as they are loop indices bounded by the size of the array). However, there are no similar guarantees relating `h_in_max`/`w_in_max` and `in_backprop`. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | tensorflow | 2.3.3 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow | 2.4.2 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow | 2.1.4 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-203 |
| PyPI | tensorflow | 2.2.3 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow-cpu | 2.4.2 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow-cpu | 2.1.4 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow-cpu | 2.2.3 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow-cpu | 2.3.3 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow-cpu | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-494 |
| PyPI | tensorflow-gpu | 2.3.3 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow-gpu | 2.4.2 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow-gpu | 2.1.4 | GHSA-pvrc-hg3f-58r6 |
| PyPI | tensorflow-gpu | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-692 |
| PyPI | tensorflow-gpu | 2.2.3 | GHSA-pvrc-hg3f-58r6 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tensorflow | tensorflow | < 2.1.4>= 2.2.0, < 2.2.3>= 2.3.0, < 2.3.3>= 2.4.0, < 2.4.2 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L