Vulnerability · Published May 14, 2021 · Assigned by GitHub_M

CVE-2021-29572Reference binding to nullptr in `SdcaOptimizer`

Low 2.5

In plain English

A low-severity null pointer dereference 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 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)2.5Low

Exploit odds (30 days)0.2%top 91.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

TensorFlow is an end-to-end open source platform for machine learning. The implementation of `tf.raw_ops.SdcaOptimizer` triggers undefined behavior due to dereferencing a null pointer. The implementation(https://github.com/tensorflow/tensorflow/blob/60a45c8b6192a4699f2e2709a2645a751d435cc3/tensorflow/core/kernels/sdca_internal.cc) does not validate that the user supplied arguments satisfy all constraints expected by the op(https://www.tensorflow.org/api_docs/python/tf/raw_ops/SdcaOptimizer). 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	tensorflow	2.3.3	GHSA-5gqf-456p-4836
PyPI	tensorflow	2.4.2	GHSA-5gqf-456p-4836
PyPI	tensorflow	2.1.4	GHSA-5gqf-456p-4836
PyPI	tensorflow	2.1.4, 2.2.3, 2.3.3, 2.4.2	PYSEC-2021-209
PyPI	tensorflow	2.2.3	GHSA-5gqf-456p-4836
PyPI	tensorflow-cpu	2.4.2	GHSA-5gqf-456p-4836
PyPI	tensorflow-cpu	2.1.4	GHSA-5gqf-456p-4836
PyPI	tensorflow-cpu	2.2.3	GHSA-5gqf-456p-4836
PyPI	tensorflow-cpu	2.3.3	GHSA-5gqf-456p-4836
PyPI	tensorflow-cpu	2.1.4, 2.2.3, 2.3.3, 2.4.2	PYSEC-2021-500
PyPI	tensorflow-gpu	2.3.3	GHSA-5gqf-456p-4836
PyPI	tensorflow-gpu	2.4.2	GHSA-5gqf-456p-4836
PyPI	tensorflow-gpu	2.1.4	GHSA-5gqf-456p-4836
PyPI	tensorflow-gpu	2.1.4, 2.2.3, 2.3.3, 2.4.2	PYSEC-2021-698
PyPI	tensorflow-gpu	2.2.3	GHSA-5gqf-456p-4836

Affected products (as reported)

Vendor	Product	Versions
tensorflow	tensorflow	< 2.1.4>= 2.2.0, < 2.2.3>= 2.3.0, < 2.3.3>= 2.4.0, < 2.4.2

Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

References

https://github.com/tensorflow/tensorflow/security/advisories/GHSA-5gqf-456p-4836 x_refsource_CONFIRM
https://github.com/tensorflow/tensorflow/commit/f7cc8755ac6683131fdfa7a8a121f9d7a9dec6fb x_refsource_MISC