PT-2021-18315 · Google · Tensorflow

Yakun Zhang + 1 · Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29564

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 null pointer dereference in the implementation of tf.raw ops.EditDistance due to incomplete validation of the input parameters. This can be achieved by allocating an empty tensor for the output, resulting in a null dereference when calling setZero on an empty buffer.

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.EditDistance function until a patch is available.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BIT-TENSORFLOW-2021-29564

CVE-2021-29564

GHSA-75F6-78JR-4656

PYSEC-2021-201

PYSEC-2021-492

PYSEC-2021-690

Affected Products

Tensorflow

References · 14

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-75f6-78jr-4656 · Exploit
• https://github.com/tensorflow/tensorflow/commit/f4c364a5d6880557f6f5b6eb5cee2c407f0186b3 · Patch
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29564 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29564 · Security Note
• https://osv.dev/vulnerability/GHSA-75f6-78jr-4656 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29564 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-492 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-690 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-201 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-690.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-492.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-201.yaml · Note
• https://t.me/cvenotify/14746 · Telegram Post