mjs/ES6 mjs.c exec_expr null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability was found in mjs and ES6 and classified as problematic. This affects the function exec_expr of the file mjs.c. Executing a manipulation can lead to null pointer dereference. This vulnerability appears as CVE-2021-33441. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in mjs and ES6 (the affected version is unknown). This vulnerability affects the function exec_expr of the file mjs.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

An issue was discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6). There is NULL pointer dereference in exec_expr() in mjs.c.

The weakness was presented 07/26/2022 as 165. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-33441 since 05/20/2021. 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

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/20/2021 🔍
07/26/2022 +432 days 🔍
07/26/2022 +0 days 🔍
07/26/2022 +0 days 🔍

Sourcesinfo

Advisory: 165
Status: Confirmed

CVE: CVE-2021-33441 (🔍)
GCVE (CVE): GCVE-0-2021-33441
GCVE (VulDB): GCVE-100-205048

Entryinfo

Created: 07/26/2022 16:41
Changes: 07/26/2022 16:41 (38)
Complete: 🔍
Cache ID: 216::103

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