PT-2021-18332 · Google · Tensorflow

Yakun Zhang + 1 · Published 2021-05-14 · Updated 2024-03-06 · CVE-2021-29581

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 Due to lack of validation in tf.raw ops.CTCBeamSearchDecoder, an attacker can trigger denial of service via segmentation faults. The implementation fails to detect cases when the input tensor is empty and proceeds to read data from a null buffer.

Recommendations For TensorFlow versions prior to 2.5.0, update to version 2.5.0 or later. For TensorFlow versions 2.4.2 and earlier, update to version 2.4.2 or later. For TensorFlow versions 2.3.3 and earlier, update to version 2.3.3 or later. For TensorFlow versions 2.2.3 and earlier, update to version 2.2.3 or later. For TensorFlow versions 2.1.4 and earlier, update to version 2.1.4 or later. As a temporary workaround, consider disabling the tf.raw ops.CTCBeamSearchDecoder function until a patch is available.

Exploit

Fix

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

BIT-TENSORFLOW-2021-29581

CVE-2021-29581

GHSA-VQ2R-5XVM-3HC3

PYSEC-2021-218

PYSEC-2021-509

PYSEC-2021-707

Affected Products

Tensorflow

References · 15

• 🔥 https://github.com/tensorflow/tensorflow/security/advisories/GHSA-vq2r-5xvm-3hc3 · Exploit
• https://github.com/tensorflow/tensorflow/commit/b1b323042264740c398140da32e93fb9c2c9f33e · Patch
• https://osv.dev/vulnerability/GHSA-vq2r-5xvm-3hc3 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-707 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29581 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29581 · Security Note
• https://osv.dev/vulnerability/PYSEC-2021-509 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-tensorflow-2021-29581 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-218 · Vendor Advisory
• https://github.com/tensorflow/tensorflow · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-509.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-218.yaml · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-707.yaml · Note
• https://t.me/cvenotify/14727 · Telegram Post
• https://t.me/cvenotify/14739 · Telegram Post