What is CVE-2023-50044?

CVE-2023-50044 is a critical-severity vulnerability in Cesanta Mjs, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-12-20.

How severe is CVE-2023-50044?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-50044 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Cesanta Mjs

CVE-2023-50044

Cesanta MJS 2.20.0 has a getprop_builtin_foreign out-of-bounds read if a Built-in API name occurs in a substring of an input string.

Vulnerability class: Buffer Overflow

EPSS: 0.009 (54.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cesanta Mjs — versions 2.22.0
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

pip-izony/pip-izony

References

cve@mitre.org (Exploit, Issue Tracking)
cve@mitre.org (Patch)

Frequently asked questions

What is CVE-2023-50044?: CVE-2023-50044 is a critical-severity vulnerability in Cesanta Mjs, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-12-20.
How severe is CVE-2023-50044?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-50044 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.