PT-2021-18310 · Google · Tensorflow

Yakun Zhang + 1 · Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29559

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions TensorFlow versions prior to 2.5.0 TensorFlow versions 2.4.2, 2.3.3, 2.2.3, and 2.1.4 are also affected

Description An attacker can access data outside of bounds of heap allocated array in tf.raw ops.UnicodeEncode. This is because the implementation assumes that the input value/input splits pair specify a valid sparse tensor.

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 newer version that includes the fix. For TensorFlow version 2.3.3, update to a newer version that includes the fix. For TensorFlow version 2.2.3, update to a newer version that includes the fix. For TensorFlow version 2.1.4, update to a newer version that includes the fix. As a temporary workaround, consider restricting the use of the tf.raw ops.UnicodeEncode function until a patch is available.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BIT-TENSORFLOW-2021-29559

CVE-2021-29559

GHSA-59Q2-X2QC-4C97

PYSEC-2021-196

PYSEC-2021-487

PYSEC-2021-685

Affected Products

Tensorflow

References · 14

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-59q2-x2qc-4c97 · Exploit
• https://github.com/tensorflow/tensorflow/commit/51300ba1cc2f487aefec6e6631fef03b0e08b298 · Patch
• https://osv.dev/vulnerability/PYSEC-2021-196 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-487 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-59q2-x2qc-4c97 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29559 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29559 · Security Note
• https://osv.dev/vulnerability/PYSEC-2021-685 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29559 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-487.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-196.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-685.yaml · Note
• https://t.me/cvenotify/14616 · Telegram Post