VDB-226278 · CVE-2021-40507 · GCVE-0-2021-40507

OpenRISC OR1200 up to 2015-11-11 memory corruption

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.
8.7	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in OpenRISC OR1200 up to 2015-11-11. This affects an unknown function. The manipulation results in memory corruption. This vulnerability was named CVE-2021-40507. There is no available exploit. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability classified as critical has been found in OpenRISC OR1200 up to 2015-11-11. Affected is an unknown part. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015-11-11. The overflow flag is not being updated correctly for the subtract instruction, which results in an incorrect value in the overflow flag. Any software that relies on this flag may experience corruption in execution.

The weakness was presented 04/18/2023 as 2c0765d7ba12813df273cd693a99c4e744f0fbd5. The advisory is available at github.com. This vulnerability is traded as CVE-2021-40507 since 09/03/2021. The technical details are unknown and an exploit is not available.

Applying the patch 2c0765d7ba12813df273cd693a99c4e744f0fbd5 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Vendor

OpenRISC

Name

OR1200

Version

2015-11-11

License

open-source

Website

Product: https://github.com/openrisc/or1200/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.9
VulDB Meta Temp Score: 8.7

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

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: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 2c0765d7ba12813df273cd693a99c4e744f0fbd5

Timelineinfo

09/03/2021 🔍
04/18/2023 +592 days 🔍
04/18/2023 +0 days 🔍
05/05/2023 +17 days 🔍

Sourcesinfo

Product: github.com

Advisory: 2c0765d7ba12813df273cd693a99c4e744f0fbd5
Status: Confirmed

CVE: CVE-2021-40507 (🔍)
GCVE (CVE): GCVE-0-2021-40507
GCVE (VulDB): GCVE-100-226278

Entryinfo

Created: 04/18/2023 16:18
Updated: 05/05/2023 22:18
Changes: 04/18/2023 16:18 (41), 05/05/2023 22:18 (11)
Complete: 🔍
Cache ID: 216::103