PT-2021-18266 · Google · Tensorflow

Yakun Zhang + 1 · Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29515

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 MatrixDiag* operations does not validate that the tensor arguments are non-empty. This can lead to null pointer dereferences if any of the tensors are null. The issue can be triggered by passing empty tensors to the tf.raw ops.MatrixDiagV2 or tf.raw ops.MatrixDiagV3 operations.

Recommendations: For TensorFlow versions prior to 2.5.0, update to version 2.5.0 or later. For TensorFlow versions 2.4.2 and earlier, update to version 2.4.2 or later. For TensorFlow versions 2.3.3 and earlier, update to version 2.3.3 or later. For TensorFlow versions 2.2.3 and earlier, update to version 2.2.3 or later. For TensorFlow versions 2.1.4 and earlier, update to version 2.1.4 or later. As a temporary workaround, consider validating the tensor arguments before passing them to the MatrixDiag* operations to prevent null pointer dereferences.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BIT-TENSORFLOW-2021-29515

CVE-2021-29515

GHSA-HC6C-75P4-HMQ4

PYSEC-2021-152

PYSEC-2021-443

PYSEC-2021-641

Affected Products

Tensorflow

References · 13

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-hc6c-75p4-hmq4 · Exploit
• https://github.com/tensorflow/tensorflow/commit/a7116dd3913c4a4afd2a3a938573aa7c785fdfc6 · Patch
• https://osv.dev/vulnerability/PYSEC-2021-443 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-152 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29515 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-hc6c-75p4-hmq4 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-641 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29515 · Security Note
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29515 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-443.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-152.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-641.yaml · Note