CVE-2020-15212 Out of bounds access in tensorflow-lite
- Published
- Updated
- Exploit status
- No public exploit known
Description
In TensorFlow Lite before versions 2.2.1 and 2.3.1, models using segment sum can trigger writes outside of bounds of heap allocated buffers by inserting negative elements in the segment ids tensor. Users having access to segment_ids_data can alter output_index and then write to outside of output_data buffer. This might result in a segmentation fault but it can also be used to further corrupt the memory and can be chained with other vulnerabilities to create more advanced exploits. The issue is patched in commit 204945b19e44b57906c9344c0d00120eeeae178a and is released in TensorFlow versions 2.2.1, or 2.3.1. A potential workaround would be to add a custom Verifier to the model loading code to ensure that the segment ids are all positive, although this only handles the case when the segment ids are stored statically in the model. A similar validation could be done if the segment ids are generated at runtime between inference steps. If the segment ids are generated as outputs of a tensor during inference steps, then there are no possible workaround and users are advised to upgrade to patched code.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pypi tensorflow(PyPI) | >= 2.2.0, < 2.2.1 | 2.2.1 |
| pypi tensorflow(PyPI) | = 2.2.0 | No fix listed |
| pypi tensorflow(PyPI) | >= 2.3.0, < 2.3.1 | 2.3.1 |
| pypi tensorflow(PyPI) | = 2.3.0 | No fix listed |
| pypi tensorflow-cpu(PyPI) | >= 2.2.0, < 2.2.1 | 2.2.1 |
| pypi tensorflow-cpu(PyPI) | = 2.2.0 | No fix listed |
| pypi tensorflow-cpu(PyPI) | >= 2.3.0, < 2.3.1 | 2.3.1 |
| pypi tensorflow-cpu(PyPI) | = 2.3.0 | No fix listed |
| pypi tensorflow-gpu(PyPI) | >= 2.2.0, < 2.2.1 | 2.2.1 |
| pypi tensorflow-gpu(PyPI) | = 2.2.0 | No fix listed |
| pypi tensorflow-gpu(PyPI) | >= 2.3.0, < 2.3.1 | 2.3.1 |
| pypi tensorflow-gpu(PyPI) | = 2.3.0 | No fix listed |
| Google tensorflow | >= 2.2.0, < 2.2.1 | 2.2.1 |
| Google tensorflow | >= 2.3.0, < 2.3.1 | 2.3.1 |
| TensorFlow | = >= 2.2.0, < 2.2.1 | No fix listed |
| TensorFlow | = >= 2.3.0, < 2.3.1 | No fix listed |
References
- github.com exploit patch third-party-advisory vendor-advisory
- nvd.nist.gov third-party-advisory vendor-advisory
- github.com patch
- github.com patch third-party-advisory
- github.com patch
- github.com
- github.com
- github.com
- github.com product
- github.com
- github.com third-party-advisory
- github.com
- Debian Security Tracker CVE-2020-15212 vendor-advisory