PT-2021-18305 · Google · Tensorflow

Yakun Zhang + 1 · Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29554

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 version 2.4.2 TensorFlow version 2.3.3

Description An attacker can cause a denial of service via a FPE runtime error in tf.raw ops.DenseCountSparseOutput. This is because the implementation computes a divisor value from user data but does not check that the result is 0 before doing the division. Since data is given by the values argument, num batch elements is 0. The issue can be exploited by providing specific input to the tf.raw ops.DenseCountSparseOutput function, such as empty values and weights arguments.

Recommendations For TensorFlow versions prior to 2.5.0, update to version 2.5.0 or later to resolve the issue. For TensorFlow version 2.4.2, apply the cherrypicked commit to resolve the issue. For TensorFlow version 2.3.3, apply the cherrypicked commit to resolve the issue. As a temporary workaround, consider avoiding the use of the tf.raw ops.DenseCountSparseOutput function with empty values and weights arguments until a patch is available.

Exploit

Fix

Divide By Zero

Weakness Enumeration

CWE-369

Related Identifiers

BIT-TENSORFLOW-2021-29554

CVE-2021-29554

GHSA-QG48-85HG-MQC5

PYSEC-2021-191

PYSEC-2021-482

PYSEC-2021-680

Affected Products

Tensorflow

References · 14

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-qg48-85hg-mqc5 · Exploit
• https://github.com/tensorflow/tensorflow/commit/da5ff2daf618591f64b2b62d9d9803951b945e9f · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-29554 · Security Note
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29554 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-qg48-85hg-mqc5 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-191 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-680 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-482 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29554 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-482.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-680.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-191.yaml · Note
• https://t.me/cvenotify/14478 · Telegram Post