Vulnerability · Published Aug 12, 2021 · Assigned by GitHub_M
CVE-2021-37671Reference binding to nullptr in map operations in TensorFlow
High 7.8
In plain English
A high-severity security flaw in tensorflow from tensorflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can cause undefined behavior via binding a reference to null pointer in `tf.raw_ops.Map*` and `tf.raw_ops.OrderedMap*` operations. The [implementation](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/core/kernels/map_stage_op.cc#L222-L248) has a check in place to ensure that `indices` is in ascending order, but does not check that `indices` is not empty. We have patched the issue in GitHub commit 532f5c5a547126c634fefd43bbad1dc6417678ac. 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | tensorflow | 2.3.4, 2.4.3 | PYSEC-2021-293 |
| PyPI | tensorflow | 2.3.4 | GHSA-qr82-2c78-4m8h |
| PyPI | tensorflow | 2.4.3 | GHSA-qr82-2c78-4m8h |
| PyPI | tensorflow | 2.5.1 | GHSA-qr82-2c78-4m8h |
| PyPI | tensorflow-cpu | 2.4.3 | GHSA-qr82-2c78-4m8h |
| PyPI | tensorflow-cpu | 2.3.4, 2.4.3 | PYSEC-2021-584 |
| PyPI | tensorflow-cpu | 2.3.4 | GHSA-qr82-2c78-4m8h |
| PyPI | tensorflow-cpu | 2.5.1 | GHSA-qr82-2c78-4m8h |
| PyPI | tensorflow-gpu | 2.3.4, 2.4.3 | PYSEC-2021-782 |
| PyPI | tensorflow-gpu | 2.3.4 | GHSA-qr82-2c78-4m8h |
| PyPI | tensorflow-gpu | 2.4.3 | GHSA-qr82-2c78-4m8h |
| PyPI | tensorflow-gpu | 2.5.1 | GHSA-qr82-2c78-4m8h |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tensorflow | tensorflow | >= 2.5.0, < 2.5.1>= 2.4.0, < 2.4.3< 2.3.4 |
Weakness: CWE-824 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H