NULL Pointer Dereference Vulnerability in mjs JavaScript Engine by Cesanta
CVE-2021-33445

5.5MEDIUM

Key Information:

Vendor

Cesanta

Status
Mjs
Vendor
CVE Published:
26 July 2022

What is CVE-2021-33445?

A vulnerability exists in the mjs JavaScript engine, specifically in the mjs_string_char_code_at() function within mjs.c, which can lead to a NULL pointer dereference. This can be exploited to potentially disrupt the execution flow or cause application crashes, impacting the reliability and security of software utilizing the mjs engine.

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References

https://github.com/cesanta/mjs/issues/169
x_refsource_MISC
https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f7...
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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