CVE-2021-46521 — HIGH (7.8)

Vulnerability Description

Cesanta MJS v2.20.0 was discovered to contain a global buffer overflow via c_vsnprintf at mjs/src/common/str_util.c.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Cesanta	Mjs	2.20.0

Related Weaknesses (CWE)

CWE-120

References

https://github.com/cesanta/mjs/issues/190ExploitIssue TrackingThird Party Advisory
https://github.com/cesanta/mjs/issues/190ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2021-46521?

CVE-2021-46521 is a vulnerability with a CVSS score of 7.8 (HIGH). Cesanta MJS v2.20.0 was discovered to contain a global buffer overflow via c_vsnprintf at mjs/src/common/str_util.c.

How severe is CVE-2021-46521?

CVE-2021-46521 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-46521?

Check the references section above for vendor advisories and patch information. Affected products include: Cesanta Mjs.