Vulnerability · Published May 14, 2021 · Assigned by GitHub_M
CVE-2021-29536Heap buffer overflow in `QuantizedReshape`
Low 2.5
In plain English
A low-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 11% 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 cause a heap buffer overflow in `QuantizedReshape` by passing in invalid thresholds for the quantization. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/a324ac84e573fba362a5e53d4e74d5de6729933e/tensorflow/core/kernels/quantized_reshape_op.cc#L38-L55) assumes that the 2 arguments are always valid scalars and tries to access the numeric value directly. However, if any of these tensors is empty, then `.flat<T>()` is an empty buffer and accessing the element at position 0 results in overflow. 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-2gfx-95x2-5v3x |
| PyPI | tensorflow | 2.4.2 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow | 2.1.4 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-173 |
| PyPI | tensorflow | 2.2.3 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow-cpu | 2.4.2 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow-cpu | 2.1.4 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow-cpu | 2.2.3 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow-cpu | 2.3.3 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow-cpu | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-464 |
| PyPI | tensorflow-gpu | 2.3.3 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow-gpu | 2.4.2 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow-gpu | 2.1.4 | GHSA-2gfx-95x2-5v3x |
| PyPI | tensorflow-gpu | 2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3 | PYSEC-2021-662 |
| PyPI | tensorflow-gpu | 2.2.3 | GHSA-2gfx-95x2-5v3x |
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-131 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L