CVE-2021-29515 – tensorflow

Package

Manager: pip
Name: tensorflow
Vulnerable Version: >=0 <2.1.4 || >=2.2.0 <2.2.3 || >=2.3.0 <2.3.3 || >=2.4.0 <2.4.2

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

EPSS: 0.00017 pctl0.02758

Details

Reference binding to null pointer in `MatrixDiag*` ops ### Impact The implementation of [`MatrixDiag*` operations](https://github.com/tensorflow/tensorflow/blob/4c4f420e68f1cfaf8f4b6e8e3eb857e9e4c3ff33/tensorflow/core/kernels/linalg/matrix_diag_op.cc#L195-L197) does not validate that the tensor arguments are non-empty: ```cc num_rows = context->input(2).flat<int32>()(0); num_cols = context->input(3).flat<int32>()(0); padding_value = context->input(4).flat<T>()(0); ``` Thus, users can trigger null pointer dereferences if any of the above tensors are null: ```python import tensorflow as tf d = tf.convert_to_tensor([],dtype=tf.float32) p = tf.convert_to_tensor([],dtype=tf.float32) tf.raw_ops.MatrixDiagV2(diagonal=d, k=0, num_rows=0, num_cols=0, padding_value=p) ``` Changing from `tf.raw_ops.MatrixDiagV2` to `tf.raw_ops.MatrixDiagV3` still reproduces the issue. ### Patches We have patched the issue in GitHub commit [a7116dd3913c4a4afd2a3a938573aa7c785fdfc6](https://github.com/tensorflow/tensorflow/commit/a7116dd3913c4a4afd2a3a938573aa7c785fdfc6). 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. ### 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 Ye Zhang and Yakun Zhang of Baidu X-Team.

Metadata

Created: 2021-05-21T14:20:54Z
Modified: 2024-10-30T22:07:10Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-hc6c-75p4-hmq4/GHSA-hc6c-75p4-hmq4.json
CWE IDs: ["CWE-476"]
Alternative ID: GHSA-hc6c-75p4-hmq4
Finding: F002
Auto approve: 1