Vulnerability Description
TensorFlow is an end-to-end open source platform for machine learning. In affected versions TFLite's [`GatherNd` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather_nd.cc#L124) does not support negative indices but there are no checks for this situation. Hence, an attacker can read arbitrary data from the heap by carefully crafting a model with negative values in `indices`. Similar issue exists in [`Gather` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/gather.cc). We have patched the issue in GitHub commits bb6a0383ed553c286f87ca88c207f6774d5c4a8f and eb921122119a6b6e470ee98b89e65d721663179d. 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tensorflow | >= 2.3.0, < 2.3.4 |
Related Weaknesses (CWE)
References
- https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f677PatchThird Party Advisory
- https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d72Third Party Advisory
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437Third Party Advisory
- https://github.com/tensorflow/tensorflow/commit/bb6a0383ed553c286f87ca88c207f677PatchThird Party Advisory
- https://github.com/tensorflow/tensorflow/commit/eb921122119a6b6e470ee98b89e65d72Third Party Advisory
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jwf9-w5xm-f437Third Party Advisory
FAQ
What is CVE-2021-37687?
CVE-2021-37687 is a vulnerability with a CVSS score of 5.5 (MEDIUM). TensorFlow is an end-to-end open source platform for machine learning. In affected versions TFLite's [`GatherNd` implementation](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99...
How severe is CVE-2021-37687?
CVE-2021-37687 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-37687?
Check the references section above for vendor advisories and patch information. Affected products include: Google Tensorflow.