VDB-128098 · CVE-2018-20201 · Issue 1587

Espruino 2V00 JS File jsflash.c jsfNameFromString 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.
6.5	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Espruino 2V00. This vulnerability affects the function jsfNameFromString of the file jsflash.c of the component JS File Handler. Executing a manipulation can lead to memory corruption. This vulnerability appears as CVE-2018-20201. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Espruino 2V00. This vulnerability affects the function jsfNameFromString of the file jsflash.c of the component JS File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

There is a stack-based buffer over-read in the jsfNameFromString function of jsflash.c in Espruino 2V00, leading to a denial of service or possibly unspecified other impact via a crafted js file.

The bug was discovered 12/18/2018. The weakness was presented 12/18/2018 (Website). The advisory is available at github.com. This vulnerability was named CVE-2018-20201 since 12/18/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Espruino

Version

2V00

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
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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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

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

12/18/2018 🔍
12/18/2018 +0 days 🔍
12/18/2018 +0 days 🔍
12/18/2018 +0 days 🔍
12/19/2018 +1 days 🔍
06/19/2023 +1643 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1587
Status: Not defined

CVE: CVE-2018-20201 (🔍)
GCVE (CVE): GCVE-0-2018-20201
GCVE (VulDB): GCVE-100-128098

Entryinfo

Created: 12/19/2018 07:55
Updated: 06/19/2023 19:50
Changes: 12/19/2018 07:55 (56), 04/21/2020 20:35 (1), 06/19/2023 19:50 (3)
Complete: 🔍
Cache ID: 216::103