NULL Pointer Dereference in mjs JavaScript Engine
CVE-2021-33449

5.5MEDIUM

Key Information:

Vendor

Cesanta

Status
Mjs
Vendor
CVE Published:
26 July 2022

What is CVE-2021-33449?

A vulnerability exists in the mjs Restricted JavaScript engine where a NULL pointer dereference can occur in the function mjs_bcode_part_get_by_offset() within mjs.c. This issue could potentially lead to unexpected application behavior or crashes. Users of mjs are advised to review their implementations and apply necessary updates as outlined in the related GitHub issue to mitigate risks associated with this vulnerability.

References

https://github.com/cesanta/mjs/issues/162
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

.