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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTk3d2YtcDc3Ny04Nmpx

Division by zero in TFLite's implementation of Split


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

TF_LITE_ENSURE_MSG(context, input_size % num_splits == 0, "Not an even split");
const int slice_size = input_size / num_splits;

An attacker can craft a model such that num_splits would be 0.


We have patched the issue in GitHub commit b22786e7e9b7bdb6a56936ff29cc7e9968d7bc1d.

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

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This vulnerability has been reported by members of the Aivul Team from Qihoo 360.

Source: GitHub Advisory Database
Origin: Unspecified
Severity: Low
Classification: General
Published: about 2 years ago
Updated: 4 months 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-97wf-p777-86jq, CVE-2021-29599

Affected Packages

Versions: >= 2.4.0, < 2.4.2, >= 2.3.0, < 2.3.3, >= 2.2.0, < 2.2.3, < 2.1.4
Fixed in: 2.4.2, 2.3.3, 2.2.3, 2.1.4