Cesanta MJS up to 2.19.x src/mjs_gc.c assertion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as problematic, was found in Cesanta MJS up to 2.19.x. This affects an unknown functionality of the file src/mjs_gc.c. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-617. This is going to have an impact on availability. The summary by CVE is:

There is an Assertion `s < mjs->owned_strings.buf + mjs->owned_strings.len&#039; failed at src/mjs_gc.c in Cesanta MJS v2.20.0.

The weakness was shared 01/28/2022 as 185. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2021-46510 since 01/24/2022. The attack can only be done within the local network. The successful exploitation needs a authentication. Technical details are known, but no exploit is available.

Upgrading to version 2.20.0 eliminates this vulnerability.




CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍



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


Class: Denial of service
CWE: CWE-617
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfoedit

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: MJS 2.20.0


01/24/2022 CVE reserved
01/28/2022 +4 days Advisory disclosed
01/28/2022 +0 days VulDB entry created
01/30/2022 +2 days VulDB last update


Advisory: 185
Status: Confirmed

CVE: CVE-2021-46510 (🔒)


Created: 01/28/2022 10:10 AM
Updated: 01/30/2022 11:01 AM
Changes: (1) source_cve_nvd_summary
Complete: 🔍


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