PT-2021-18344 · Google · Tensorflow

Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29593

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions TensorFlow versions prior to 2.5.0 TensorFlow versions 2.4.2 and earlier TensorFlow versions 2.3.3 and earlier TensorFlow versions 2.2.3 and earlier TensorFlow versions 2.1.4 and earlier

Description The implementation of the BatchToSpaceNd TFLite operator is vulnerable to a division by zero error. An attacker can craft a model such that one dimension of the block input is 0, resulting in a corresponding value of 0 in block shape. This can lead to a division by zero error in the output batch size = output batch size / block shape[dim] line.

Recommendations For versions prior to 2.5.0, update to TensorFlow 2.5.0 or later to resolve the issue. For versions 2.4.2 and earlier, update to TensorFlow 2.4.2 or later to resolve the issue. For versions 2.3.3 and earlier, update to TensorFlow 2.3.3 or later to resolve the issue. For versions 2.2.3 and earlier, update to TensorFlow 2.2.3 or later to resolve the issue. For versions 2.1.4 and earlier, update to TensorFlow 2.1.4 or later to resolve the issue. As a temporary workaround, consider avoiding the use of the BatchToSpaceNd TFLite operator until a patch is available.

Exploit

Fix

Divide By Zero

Weakness Enumeration

CWE-369

Related Identifiers

BIT-TENSORFLOW-2021-29593

CVE-2021-29593

GHSA-CFX7-2XPC-8W4H

PYSEC-2021-230

PYSEC-2021-521

PYSEC-2021-719

Affected Products

Tensorflow

References · 14

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-cfx7-2xpc-8w4h · Exploit
• https://github.com/tensorflow/tensorflow/commit/2c74674348a4708ced58ad6eb1b23354df8ee044 · Patch
• https://osv.dev/vulnerability/CVE-2021-29593 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29593 · Security Note
• https://osv.dev/vulnerability/PYSEC-2021-521 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-230 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29593 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-cfx7-2xpc-8w4h · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-719 · Vendor Advisory
• https://github.com/tensorflow/tensorflow/blob/b5ed552fe55895aee8bd8b191f744a069957d18d/tensorflow/lite/kernels/batch_to_space_nd.cc#L81-L82 · Note
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-719.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-521.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-230.yaml · Note