VDB-191313 · CVE-2021-46324 · Issue 2121

Espruino 2V11.251 src/jsvar.c jsvNewFromString stack-based overflow

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.
5.5	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Espruino 2V11.251 and classified as critical. Affected by this issue is the function jsvNewFromString of the file src/jsvar.c. Performing a manipulation results in stack-based overflow. This vulnerability was named CVE-2021-46324. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Espruino 2V11.251. This affects the function jsvNewFromString of the file src/jsvar.c. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 01/21/2022 as 2121. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2021-46324 since 01/18/2022. Technical details are known, but no exploit is available.

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

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

Productinfo

Name

Espruino

Version

2V11.251

Website

Product: https://github.com/espruino/Espruino/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

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

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: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/18/2022 🔍
01/21/2022 +3 days 🔍
01/21/2022 +0 days 🔍
01/26/2022 +5 days 🔍

Sourcesinfo

Product: github.com

Advisory: 2121
Status: Confirmed

CVE: CVE-2021-46324 (🔍)
GCVE (CVE): GCVE-0-2021-46324
GCVE (VulDB): GCVE-100-191313

Entryinfo

Created: 01/21/2022 08:29
Updated: 01/26/2022 11:43
Changes: 01/21/2022 08:29 (38), 01/26/2022 11:43 (1)
Complete: 🔍
Cache ID: 216::103