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CVE-2021-33439

Date: July 26, 2022

An issue was discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6). There is Integer overflow in gc_compact_strings() in mjs.c.

Language: C

Severity Score

Related Resources (4)

https://github.com/cesanta/mjs/issues/159
https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d
https://nvd.nist.gov/vuln/detail/CVE-2021-33439
https://www.mend.io/vulnerability-database/CVE-2021-33439

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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