Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWo4cWgtM3hycS1jODI1

Division by zero in TFLite's implementation of `OneHot`

Impact

The implementation of the OneHot TFLite operator is vulnerable to a division by zero error:

int prefix_dim_size = 1;
for (int i = 0; i < op_context.axis; ++i) {
  prefix_dim_size *= op_context.indices->dims->data[i];
}
const int suffix_dim_size = NumElements(op_context.indices) / prefix_dim_size;

An attacker can craft a model such that at least one of the dimensions of indices would be 0. In turn, the prefix_dim_size value would become 0.

Patches

We have patched the issue in GitHub commit 3ebedd7e345453d68e279cfc3e4072648e5e12e5.

The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, 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 members of the Aivul Team from Qihoo 360.

Permalink: https://github.com/advisories/GHSA-j8qh-3xrq-c825
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWo4cWgtM3hycS1jODI1
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Low
Classification: General
Published: almost 3 years ago
Updated: about 1 year ago

CVSS Score: 2.5
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Identifiers: GHSA-j8qh-3xrq-c825, CVE-2021-29600
References:

• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-j8qh-3xrq-c825
• https://nvd.nist.gov/vuln/detail/CVE-2021-29600
• https://github.com/tensorflow/tensorflow/commit/3ebedd7e345453d68e279cfc3e4072648e5e12e5
• https://github.com/advisories/GHSA-j8qh-3xrq-c825

Repository: https://github.com/tensorflow/tensorflow
Blast Radius: 12.2

Affected Packages