Vulnerability · Published May 14, 2021 · Assigned by GitHub_M

CVE-2021-29592Null pointer dereference in TFLite's `Reshape` operator

Medium 4.4

In plain English

A medium-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 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.4Medium

Exploit odds (30 days)0.2%top 88.0% 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 fix for CVE-2020-15209(https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15209) missed the case when the target shape of `Reshape` operator is given by the elements of a 1-D tensor. As such, the fix for the vulnerability(https://github.com/tensorflow/tensorflow/blob/9c1dc920d8ffb4893d6c9d27d1f039607b326743/tensorflow/lite/core/subgraph.cc#L1062-L1074) allowed passing a null-buffer-backed tensor with a 1D shape. 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-jjr8-m8g8-p6wv
PyPI	tensorflow	2.4.2	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow	2.1.4	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow	2.1.4, 2.2.3, 2.3.3, 2.4.2	PYSEC-2021-229
PyPI	tensorflow	2.2.3	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow-cpu	2.4.2	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow-cpu	2.1.4	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow-cpu	2.2.3	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow-cpu	2.3.3	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow-cpu	2.1.4, 2.2.3, 2.3.3, 2.4.2	PYSEC-2021-520
PyPI	tensorflow-gpu	2.3.3	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow-gpu	2.4.2	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow-gpu	2.1.4	GHSA-jjr8-m8g8-p6wv
PyPI	tensorflow-gpu	2.1.4, 2.2.3, 2.3.3, 2.4.2	PYSEC-2021-718
PyPI	tensorflow-gpu	2.2.3	GHSA-jjr8-m8g8-p6wv

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:L/PR:L/UI:N/S:U/C:N/I:L/A:L

References

https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jjr8-m8g8-p6wv x_refsource_CONFIRM
https://github.com/tensorflow/tensorflow/commit/f8378920345f4f4604202d4ab15ef64b2aceaa16 x_refsource_MISC