VDB-202432 · CVE-2021-41683 · Issue 4745

JerryScript 2.4.0 ecma-helpers.c ecma_get_lex_env_type 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 was found in JerryScript 2.4.0. It has been declared as critical. Affected is the function ecma_get_lex_env_type of the file ecma-helpers.c. Executing a manipulation can lead to stack-based overflow. This vulnerability is tracked as CVE-2021-41683. No exploit exists.

Detailsinfo

A vulnerability has been found in JerryScript 2.4.0 and classified as critical. This vulnerability affects the function ecma_get_lex_env_type of the file ecma-helpers.c. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is 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). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

There is a stack-overflow at ecma-helpers.c:326 in ecma_get_lex_env_type in JerryScript 2.4.0

The weakness was disclosed 06/20/2022 as 4745. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-41683 since 09/27/2021. There are known technical details, 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Programming Tool Software

Name

JerryScript

Version

2.4.0

License

free

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
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

09/27/2021 🔍
06/20/2022 +266 days 🔍
06/20/2022 +0 days 🔍
06/20/2022 +0 days 🔍

Sourcesinfo

Advisory: 4745
Status: Confirmed

CVE: CVE-2021-41683 (🔍)
GCVE (CVE): GCVE-0-2021-41683
GCVE (VulDB): GCVE-100-202432

Entryinfo

Created: 06/20/2022 22:10
Changes: 06/20/2022 22:10 (39)
Complete: 🔍
Cache ID: 216::103