CVE-2021-41197

Crashes due to overflow and `CHECK`-fail in ops with large tensor shapes

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

TensorFlow is an open source platform for machine learning. In affected versions TensorFlow allows tensor to have a large number of dimensions and each dimension can be as large as desired. However, the total number of elements in a tensor must fit within an `int64_t`. If an overflow occurs, `MultiplyWithoutOverflow` would return a negative result. In the majority of TensorFlow codebase this then results in a `CHECK`-failure. Newer constructs exist which return a `Status` instead of crashing the binary. This is similar to CVE-2021-29584. 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.

TensorFlow es una plataforma de código abierto para el aprendizaje automático. En las versiones afectadas TensorFlow permite que el tensor tenga un gran número de dimensiones y cada dimensión puede ser tan grande como se desee. Sin embargo, el número total de elementos en un tensor debe caber dentro de un "int64_t". Si se produce un desbordamiento, "MultiplyWithoutOverflow" devolverá un resultado negativo. En la mayoría de los códigos de TensorFlow esto resulta en un fallo de "CHECK". Se presentan nuevas construcciones que devuelven un "Status" en lugar de bloquear el binario. Esto es similar a CVE-2021-29584. La corrección será incluida en TensorFlow versión 2.7.0. También será incluida este commit en TensorFlow versión 2.6.1, TensorFlow versión 2.5.2, y TensorFlow versión 2.4.4, ya que estos también están afectados y todavía están en el rango admitido

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-09-15 CVE Reserved
2021-11-05 CVE Published
2024-01-28 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-190: Integer Overflow or Wraparound

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC
https://github.com/tensorflow/tensorflow/issues/46890	2024-08-04
https://github.com/tensorflow/tensorflow/issues/51908	2024-08-04

URL	Date	SRC
https://github.com/tensorflow/tensorflow/commit/7c1692bd417eb4f9b33ead749a41166d6080af85	2021-11-09
https://github.com/tensorflow/tensorflow/commit/a871989d7b6c18cdebf2fb4f0e5c5b62fbc19edf	2021-11-09
https://github.com/tensorflow/tensorflow/commit/d81b1351da3e8c884ff836b64458d94e4a157c15	2021-11-09
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-prcg-wp5q-rv7p	2021-11-09

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Google Search vendor "Google"		Tensorflow Search vendor "Google" for product "Tensorflow"				< 2.4.4 Search vendor "Google" for product "Tensorflow" and version " < 2.4.4"		-		Affected
Google Search vendor "Google"		Tensorflow Search vendor "Google" for product "Tensorflow"				>= 2.5.0 < 2.5.2 Search vendor "Google" for product "Tensorflow" and version " >= 2.5.0 < 2.5.2"		-		Affected
Google Search vendor "Google"		Tensorflow Search vendor "Google" for product "Tensorflow"				>= 2.6.0 < 2.6.1 Search vendor "Google" for product "Tensorflow" and version " >= 2.6.0 < 2.6.1"		-		Affected