PT-2021-18355 · Google · Tensorflow

Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29604

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 TFLite implementation of hashtable lookup in TensorFlow is vulnerable to a division by zero error. An attacker can craft a model such that the values's first dimension would be 0, leading to this error. The issue is related to the calculation of num rows and row bytes in the hashtable lookup function.

Recommendations For versions prior to 2.5.0, update to TensorFlow 2.5.0 or later to resolve the issue. For versions 2.4.2 and earlier, update to TensorFlow 2.4.2 or later to resolve the issue. For versions 2.3.3 and earlier, update to TensorFlow 2.3.3 or later to resolve the issue. For versions 2.2.3 and earlier, update to TensorFlow 2.2.3 or later to resolve the issue. For versions 2.1.4 and earlier, update to TensorFlow 2.1.4 or later to resolve the issue. As a temporary workaround, consider restricting the use of the hashtable lookup function in TFLite until a patch is available.

Exploit

Fix

Divide By Zero

Weakness Enumeration

CWE-369

Related Identifiers

BIT-TENSORFLOW-2021-29604

CVE-2021-29604

GHSA-8RM6-75MF-7R7R

PYSEC-2021-241

PYSEC-2021-532

PYSEC-2021-730

Affected Products

Tensorflow

References · 14

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-8rm6-75mf-7r7r · Exploit
• https://github.com/tensorflow/tensorflow/commit/5117e0851348065ed59c991562c0ec80d9193db2 · Patch
• https://osv.dev/vulnerability/PYSEC-2021-730 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-532 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29604 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-241 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29604 · Security Note
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29604 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-8rm6-75mf-7r7r · Vendor Advisory
• https://github.com/tensorflow/tensorflow/blob/1a8e885b864c818198a5b2c0cbbeca5a1e833bc8/tensorflow/lite/kernels/hashtable_lookup.cc#L114-L115 · Note
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-532.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-730.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-241.yaml · Note