VDB-228653 · CVE-2023-31910 · Issue 5076

Jerryscript 3.0 js-parser-statm.c parser_parse_function_statement heap-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.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Jerryscript 3.0. It has been classified as critical. The impacted element is the function parser_parse_function_statement of the file /jerry-core/parser/js/js-parser-statm.c. The manipulation leads to heap-based overflow. This vulnerability is listed as CVE-2023-31910. There is no available exploit.

Detailsinfo

A vulnerability was found in Jerryscript 3.0. It has been rated as critical. This issue affects the function parser_parse_function_statement of the file /jerry-core/parser/js/js-parser-statm.c. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Jerryscript 3.0 (commit 05dbbd1) was discovered to contain a heap-buffer-overflow via the component parser_parse_function_statement at /jerry-core/parser/js/js-parser-statm.c.

The weakness was presented 05/10/2023 as 5076. The advisory is shared at github.com. The identification of this vulnerability is CVE-2023-31910 since 04/29/2023. 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-36199). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Programming Tool Software

Name

Jerryscript

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

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

NVD Base Score: 7.8
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: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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

04/29/2023 🔍
05/10/2023 +11 days 🔍
05/10/2023 +0 days 🔍
12/29/2025 +964 days 🔍

Sourcesinfo

Advisory: 5076
Status: Confirmed

CVE: CVE-2023-31910 (🔍)
GCVE (CVE): GCVE-0-2023-31910
GCVE (VulDB): GCVE-100-228653
EUVD: 🔍

Entryinfo

Created: 05/10/2023 19:32
Updated: 12/29/2025 08:54
Changes: 05/10/2023 19:32 (39), 06/02/2023 15:22 (11), 12/29/2025 08:54 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.