PT-2021-18273 · Google · Tensorflow

Yakun Zhang + 1 · Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29522

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 2.5.0 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 tf.raw ops.Conv3DBackprop* operations fail to validate that the input tensors are not empty, resulting in a division by 0 error. This occurs because the implementation does not check that the divisor used in computing the shard size is not zero. If an attacker controls the input sizes, they can trigger a denial of service via a division by zero error.

Recommendations: For versions prior to 2.5.0, update to TensorFlow 2.5.0 or later. For versions 2.4.2 and earlier, update to TensorFlow 2.4.2 or later. For versions 2.3.3 and earlier, update to TensorFlow 2.3.3 or later. For versions 2.2.3 and earlier, update to TensorFlow 2.2.3 or later. For versions 2.1.4 and earlier, update to TensorFlow 2.1.4 or later. As a temporary workaround, consider disabling the tf.raw ops.Conv3DBackprop* operations until a patch is available.

Exploit

Fix

Divide By Zero

Weakness Enumeration

CWE-369

Related Identifiers

BIT-TENSORFLOW-2021-29522

CVE-2021-29522

GHSA-C968-PQ7H-7FXV

PYSEC-2021-159

PYSEC-2021-450

PYSEC-2021-648

Affected Products

Tensorflow

References · 13

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-c968-pq7h-7fxv · Exploit
• https://github.com/tensorflow/tensorflow/commit/311403edbc9816df80274bd1ea8b3c0c0f22c3fa · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-29522 · Security Note
• https://osv.dev/vulnerability/PYSEC-2021-648 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29522 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-159 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29522 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-c968-pq7h-7fxv · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-450 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-159.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-450.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-648.yaml · Note