CVE-2022-35997

Description

### Impact If `tf.sparse.cross` receives an input `separator` that is not a scalar, it gives a `CHECK` fail that can be used to trigger a denial of service attack. ```python import tensorflow as tf tf.sparse.cross(inputs=[],name='a',separator=tf.constant(['a', 'b'],dtype=tf.string)) ``` ### Patches We have patched the issue in GitHub commit [83dcb4dbfa094e33db084e97c4d0531a559e0ebf](https://github.com/tensorflow/tensorflow/commit/83dcb4dbfa094e33db084e97c4d0531a559e0ebf). The fix will be included in TensorFlow 2.10.0. We will also cherrypick this commit on TensorFlow 2.9.1, TensorFlow 2.8.1, and TensorFlow 2.7.2, as these are also affected and still in supported range. ### For more information Please consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions. ### Attribution This vulnerability has been reported by Kang Hong Jin.

How to fix CVE-2022-35997

To remediate CVE-2022-35997, upgrade the affected package to a fixed version below.

—upgrade to 2.7.2 or later
—upgrade to 2.7.2 or later
—upgrade to 2.7.2 or later
—upgrade to 2.9.1 or later

Is CVE-2022-35997 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (4)

from 0, < 2.7.2, >= 2.8.0, < 2.8.1, >= 2.9.0, < 2.9.1
from 0, < 2.7.2
from 0, < 2.7.2
>= 2.9.0, < 2.9.1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H