PT-2021-23196 · Google · Tensorflow

Published 2021-11-05 · Updated 2024-03-06 · CVE-2021-41223

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions TensorFlow versions prior to 2.7.0 TensorFlow versions 2.6.1 and earlier TensorFlow versions 2.5.2 and earlier TensorFlow versions 2.4.4 and earlier

Description The implementation of FusedBatchNorm kernels in TensorFlow is vulnerable to a heap out-of-bounds (OOB) access. This issue can be exploited using the tf.raw ops.FusedBatchNormGrad function with specific parameters, such as y backprop, x, scale, reserve space 1, reserve space 2, epsilon, data format, and is training. The vulnerability has been reported by members of the Aivul Team from Qihoo 360.

Recommendations For versions prior to 2.7.0, update to TensorFlow 2.7.0 or later. For versions 2.6.1 and earlier, update to TensorFlow 2.6.1 or later. For versions 2.5.2 and earlier, update to TensorFlow 2.5.2 or later. For versions 2.4.4 and earlier, update to TensorFlow 2.4.4 or later. As a temporary workaround, consider disabling the FusedBatchNorm kernels until a patch is available.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BIT-TENSORFLOW-2021-41223

CVE-2021-41223

GHSA-F54P-F6JP-4RHR

OPENSUSE-SU-2024:12116-1

PYSEC-2021-415

PYSEC-2021-632

PYSEC-2021-830

Affected Products

Tensorflow

References · 13

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-f54p-f6jp-4rhr · Exploit
• https://github.com/tensorflow/tensorflow/commit/aab9998916c2ffbd8f0592059fad352622f89cda · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-41223 · Security Note
• https://osv.dev/vulnerability/PYSEC-2021-415 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-f54p-f6jp-4rhr · Vendor Advisory
• https://osv.dev/vulnerability/BIT-tensorflow-2021-41223 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-830 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-632 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-41223 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-632.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-415.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-830.yaml · Note