VDB-202820 · CVE-2021-33647 · mssa-2021-008

MindSpore Inference Shape out-of-bounds write

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.
6.4	$0-$5k	0.00

A vulnerability was found in MindSpore (affected version not known) and classified as critical. Affected by this issue is some unknown functionality of the component Inference Shape Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The software writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

When performing the inference shape operation of the Tile operator, if the input data type is not int or int32, it will access data outside of bounds of heap allocated buffers.

The weakness was published 06/27/2022 as mssa-2021-008. The advisory is shared for download at gitee.com. This vulnerability is handled as CVE-2021-33647. There are neither technical details nor an exploit publicly available.

Applying the patch 5aab6599e7280d2512a87434c174f13a0a2e7008 is able to eliminate this problem. The bugfix is ready for download at gitee.com.

Productinfo

Name

MindSpore

CPE 2.3info

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CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Partially

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 5aab6599e7280d2512a87434c174f13a0a2e7008

Timelineinfo

05/28/2021 🔍
06/27/2022 +395 days 🔍
06/27/2022 +0 days 🔍
07/15/2022 +18 days 🔍

Sourcesinfo

Advisory: mssa-2021-008
Status: Confirmed

CVE: CVE-2021-33647 (🔍)

Entryinfo

Created: 06/27/2022 11:31 PM
Updated: 07/15/2022 04:51 PM
Changes: 06/27/2022 11:31 PM (39), 07/15/2022 04:43 PM (1), 07/15/2022 04:51 PM (18)
Complete: 🔍