PT-2021-23190 · Google · Tensorflow

Published 2021-11-05 · Updated 2024-03-06 · CVE-2021-41217

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/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 process of building the control flow graph for a TensorFlow model is vulnerable to a null pointer exception when nodes that should be paired are not. This occurs because the code assumes that the first node in the pairing (e.g., an Enter node) always exists when encountering the second node (e.g., an Exit node). When this is not the case, parent is nullptr so dereferencing it causes a crash.

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 avoiding the use of unpaired nodes in the control flow graph until a patch is available.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BIT-TENSORFLOW-2021-41217

CVE-2021-41217

GHSA-5CRJ-C72X-M7GQ

OPENSUSE-SU-2024:12116-1

PYSEC-2021-409

PYSEC-2021-626

PYSEC-2021-824

Affected Products

Tensorflow

References · 13

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-5crj-c72x-m7gq · Exploit
• https://github.com/tensorflow/tensorflow/commit/05cbebd3c6bb8f517a158b0155debb8df79017ff · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-41217 · Security Note
• https://osv.dev/vulnerability/BIT-tensorflow-2021-41217 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-41217 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-409 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-5crj-c72x-m7gq · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-824 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-626 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-626.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-824.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-409.yaml · Note