CVE-2021-41201
Last modified
CVE-2021-41201 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. TensorFlow is an open source platform for machine learning. In affeced versions during execution, `EinsumHelper::ParseEquation()` is supposed to set the flags in `input_has_ellipsis` vector and `*output_has_ellipsis` boolean to indicate whether there is ellipsis in the corresponding inputs and output. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
TensorFlow is an open source platform for machine learning. In affeced versions during execution, `EinsumHelper::ParseEquation()` is supposed to set the flags in `input_has_ellipsis` vector and `*output_has_ellipsis` boolean to indicate whether there is ellipsis in the corresponding inputs and output. However, the code only changes these flags to `true` and never assigns `false`. This results in unitialized variable access if callers assume that `EinsumHelper::ParseEquation()` always sets these flags. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Tensorflow | < 2.4.4 | |
| Tensorflow | >= 2.5.0, < 2.5.2 | |
| Tensorflow | 2.6.0 |
References
- https://github.com/tensorflow/tensorflow/commit/f09caa532b6e1ac8d2aa61b7832c78c5b79300c6Patch, Third Party Advisory
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-j86v-p27c-73fmExploit, Third Party Advisory
- https://github.com/tensorflow/tensorflow/commit/f09caa532b6e1ac8d2aa61b7832c78c5b79300c6Patch, Third Party Advisory
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-j86v-p27c-73fmExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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