VDB-186175 · CVE-2021-41220 · GHSA-gpfh-jvf9-7wg5

Google TensorFlow prior 2.6.1/2.7.0 CollectiveReduceV2 use after free

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Google TensorFlow and classified as critical. Affected by this vulnerability is the function CollectiveReduceV2. This manipulation causes use after free. This vulnerability is registered as CVE-2021-41220. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Google TensorFlow (Artificial Intelligence Software). Affected by this vulnerability is the function CollectiveReduceV2. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 11/06/2021 as GHSA-gpfh-jvf9-7wg5. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2021-41220 since 09/15/2021. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.6.1 or 2.7.0 eliminates this vulnerability. Applying the patch ca38dab9d3ee66c5de06f11af9a4b1200da5ef75 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Artificial Intelligence Software

Vendor

Google

Name

TensorFlow

License

free

Website

Vendor: https://www.google.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: TensorFlow 2.6.1/2.7.0
Patch: ca38dab9d3ee66c5de06f11af9a4b1200da5ef75

Timelineinfo

09/15/2021 🔍
11/06/2021 +52 days 🔍
11/06/2021 +0 days 🔍
11/10/2021 +4 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: GHSA-gpfh-jvf9-7wg5
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-41220 (🔍)
GCVE (CVE): GCVE-0-2021-41220
GCVE (VulDB): GCVE-100-186175

Entryinfo

Created: 11/06/2021 09:37
Updated: 11/10/2021 10:35
Changes: 11/06/2021 09:37 (52), 11/10/2021 10:35 (2)
Complete: 🔍
Cache ID: 216::103