PT-2021-18275 · Google · Tensorflow

Yakun Zhang + 1 · Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29524

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: An attacker can trigger a division by 0 in tf.raw ops.Conv2DBackpropFilter. This is because the implementation does a modulus operation where the divisor is controlled by the caller. The issue can be exploited by creating a specific input tensor and filter sizes, allowing an attacker to cause a division by zero error.

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 avoiding the use of tf.raw ops.Conv2DBackpropFilter until a patch is applied.

Exploit

Fix

Divide By Zero

Weakness Enumeration

CWE-369

Related Identifiers

BIT-TENSORFLOW-2021-29524

CVE-2021-29524

GHSA-R4PJ-74MG-8868

PYSEC-2021-161

PYSEC-2021-452

PYSEC-2021-650

Affected Products

Tensorflow

References · 13

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-r4pj-74mg-8868 · Exploit
• https://github.com/tensorflow/tensorflow/commit/fca9874a9b42a2134f907d2fb46ab774a831404a · Patch
• https://osv.dev/vulnerability/GHSA-r4pj-74mg-8868 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29524 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-452 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-650 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29524 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29524 · Security Note
• https://osv.dev/vulnerability/PYSEC-2021-161 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-650.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-161.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-452.yaml · Note