VDB-234465 · CVE-2023-37143 · Issue 6888

ChakraCore cbb9b IsEmptyLoopAfterMemOp 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.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in ChakraCore cbb9b. It has been rated as critical. Affected by this vulnerability is the function BackwardPass::IsEmptyLoopAfterMemOp. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2023-37143. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in ChakraCore cbb9b. It has been classified as critical. This affects the function BackwardPass::IsEmptyLoopAfterMemOp. 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. The summary by CVE is:

ChakraCore branch master cbb9b was discovered to contain a segmentation violation via the function BackwardPass::IsEmptyLoopAfterMemOp().

The weakness was published 07/18/2023 as 6888. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-37143 since 06/28/2023. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/16/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-41063). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

ChakraCore

Version

cbb9b

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

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

NVD Base Score: 5.5
NVD Vector: 🔍

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: Memory corruption
CWE: 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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/28/2023 🔍
07/18/2023 +20 days 🔍
07/18/2023 +0 days 🔍
01/16/2026 +913 days 🔍

Sourcesinfo

Advisory: 6888
Status: Confirmed

CVE: CVE-2023-37143 (🔍)
GCVE (CVE): GCVE-0-2023-37143
GCVE (VulDB): GCVE-100-234465
EUVD: 🔍

Entryinfo

Created: 07/18/2023 23:26
Updated: 01/16/2026 03:53
Changes: 07/18/2023 23:26 (38), 08/09/2023 18:23 (11), 01/16/2026 03:53 (16)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.