PT-2021-18286 · Google · Tensorflow

Yakun Zhang + 1 · Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29535

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 version 2.4.2 TensorFlow version 2.3.3 TensorFlow version 2.2.3 TensorFlow version 2.1.4

Description: An attacker can cause a heap buffer overflow in QuantizedMul by passing in invalid thresholds for the quantization. This is because the implementation assumes that the 4 arguments are always valid scalars and tries to access the numeric value directly. However, if any of these tensors is empty, then .flat<T>() is an empty buffer and accessing the element at position 0 results in overflow.

Recommendations: For TensorFlow versions prior to 2.5.0, update to version 2.5.0 or later. For TensorFlow version 2.4.2, update to a version that includes the cherrypicked commit. For TensorFlow version 2.3.3, update to a version that includes the cherrypicked commit. For TensorFlow version 2.2.3, update to a version that includes the cherrypicked commit. For TensorFlow version 2.1.4, update to a version that includes the cherrypicked commit. As a temporary workaround, consider validating the input tensors to ensure they are not empty before passing them to the QuantizedMul function.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

CWE-131

Related Identifiers

BIT-TENSORFLOW-2021-29535

CVE-2021-29535

GHSA-M3F9-W3P3-P669

PYSEC-2021-172

PYSEC-2021-463

PYSEC-2021-661

Affected Products

Tensorflow

References · 13

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-m3f9-w3p3-p669 · Exploit
• https://github.com/tensorflow/tensorflow/commit/efea03b38fb8d3b81762237dc85e579cc5fc6e87 · Patch
• https://osv.dev/vulnerability/PYSEC-2021-463 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-661 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29535 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-m3f9-w3p3-p669 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29535 · Security Note
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29535 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-172 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-463.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-661.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-172.yaml · Note