CVE-2021-33440
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Cesanta MJS是爱尔兰Cesanta公司的一个用于 C/C++ 的嵌入式 JavaScript 引擎。专为资源有限的微控制器而设计。主要设计目标是占用空间小和简单的C / C ++互操作性。 Cesanta MJS (mJS: Restricted JavaScript engine）和ES6 (JavaScript version 6)存在安全漏洞，该漏洞源于其mjs.c组件中的mjs_bcode_commit()存在空指针引用。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-33440
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6). There is NULL pointer dereference in mjs_bcode_commit() in mjs.c.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Cesanta MJS 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cesanta MJS是爱尔兰Cesanta公司的一个用于 C/C++ 的嵌入式 JavaScript 引擎。专为资源有限的微控制器而设计。主要设计目标是占用空间小和简单的C / C ++互操作性。 Cesanta MJS (mJS: Restricted JavaScript engine）和ES6 (JavaScript version 6)存在安全漏洞，该漏洞源于其mjs.c组件中的mjs_bcode_commit()存在空指针引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2021-33440
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-33440 (2)
-
https://github.com/cesanta/mjs/issues/163 x_refsource_MISC
-
https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d x_refsource_MISC
Same Patch Batch · n/a · 2022-07-26 · 67 CVEs total
| CVE-2021-33460 | yasm 代码问题漏洞 | |
| CVE-2021-33441 | Cesanta MJS 代码问题漏洞 | |
| CVE-2021-33442 | Cesanta MJS 代码问题漏洞 | |
| CVE-2021-33450 | Nasm 安全漏洞 | |
| CVE-2021-33454 | yasm 代码问题漏洞 | |
| CVE-2021-33455 | yasm 代码问题漏洞 | |
| CVE-2021-33456 | yasm 代码问题漏洞 | |
| CVE-2021-33457 | yasm 代码问题漏洞 | |
| CVE-2021-33458 | yasm 代码问题漏洞 | |
| CVE-2021-33459 | yasm 代码问题漏洞 | |
| CVE-2021-33453 | lrzip 资源管理错误漏洞 | |
| CVE-2021-33468 | yasm 资源管理错误漏洞 | |
| CVE-2021-33467 | yasm 资源管理错误漏洞 | |
| CVE-2021-33466 | yasm 代码问题漏洞 | |
| CVE-2021-33465 | yasm 代码问题漏洞 | |
| CVE-2021-33464 | yasm 缓冲区错误漏洞 | |
| CVE-2021-33463 | yasm 代码问题漏洞 | |
| CVE-2021-33462 | yasm 资源管理错误漏洞 | |
| CVE-2021-33461 | yasm 资源管理错误漏洞 | |
| CVE-2022-31879 | Online Fire Reporting System SQL注入漏洞 |
Showing top 20 of 67 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-33440
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