CVE-2021-37687

published 2021-08-12

CVE-2021-37687: TensorFlow is an end-to-end open source platform for machine learning. In affected versions TFLite's [`GatherNd`…

medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C H I N A N

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.

Affected

14 ranges

Vendor	Product	Version range	Fixed in
debian	tensorflow	—	—
google	tensorflow	—	—
google	tensorflow	—	—
google	tensorflow	>= 2.3.0 < 2.3.4	2.3.4
google	tensorflow	>= 2.4.0 < 2.4.3	2.4.3
intel	optimization_for_tensorflow	< bb6a0383ed553c286f87ca88c207f6774d5c4a8f	bb6a0383ed553c286f87ca88c207f6774d5c4a8f
intel	optimization_for_tensorflow	>= 0 < 2.3.4	2.3.4
intel	optimization_for_tensorflow	>= 0 < eb921122119a6b6e470ee98b89e65d721663179d	eb921122119a6b6e470ee98b89e65d721663179d
intel	optimization_for_tensorflow	>= 2.3.0 < 2.3.4	2.3.4
intel	optimization_for_tensorflow	>= 2.4.0 < 2.4.3	2.4.3
intel	optimization_for_tensorflow	>= 2.5.0 < 2.5.1	2.5.1
tensorflow	tensorflow	< 2.3.4	2.3.4
tensorflow	tensorflow	—	—
tensorflow	tensorflow	—	—

CWE-125