VDB-224914 · CVE-2020-19693 · Issue 1684

Espruino 6ea4c0a jswrap_object.c jswrap_function_replacewith oldFunc out-of-bounds write

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.
7.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Espruino 6ea4c0a and classified as critical. This affects the function jswrap_function_replacewith of the file jswrap_object.c. Executing a manipulation of the argument oldFunc can lead to an unknown weakness. The identification of this vulnerability is CVE-2020-19693. There is no exploit available.

Detailsinfo

A vulnerability has been found in Espruino 6ea4c0a and classified as critical. This vulnerability affects the function jswrap_function_replacewith of the file jswrap_object.c. The manipulation of the argument oldFunc with an unknown input leads to a unknown weakness. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue found in Espruino Espruino 6ea4c0a allows an attacker to execute arbitrrary code via oldFunc parameter of the jswrap_object.c:jswrap_function_replacewith endpoint.

The weakness was shared 04/04/2023 as 1684. The advisory is available at github.com. This vulnerability was named CVE-2020-19693 since 08/13/2020. 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

6ea4c0a

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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

08/13/2020 🔍
04/04/2023 +964 days 🔍
04/04/2023 +0 days 🔍
04/22/2023 +18 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1684
Status: Confirmed

CVE: CVE-2020-19693 (🔍)
GCVE (CVE): GCVE-0-2020-19693
GCVE (VulDB): GCVE-100-224914

Entryinfo

Created: 04/04/2023 18:24
Updated: 04/22/2023 09:38
Changes: 04/04/2023 18:24 (38), 04/22/2023 09:38 (12)
Complete: 🔍
Cache ID: 216::103