What is CVE-2023-29571?

CVE-2023-29571 is a medium-severity vulnerability in Cesanta Mjs, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2023-04-12.

How severe is CVE-2023-29571?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2023-29571 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-2023-29571

Cesanta MJS v2.20.0 was discovered to contain a SEGV vulnerability via gc_sweep at src/mjs_gc.c. This vulnerability can lead to a Denial of Service (DoS).

Vulnerability class: Buffer Overflow

EPSS: 0.003 (21.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Cesanta Mjs — versions 2.20.0
N/a — versions n/a

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

z1r00/fuzz_

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-29571?: CVE-2023-29571 is a medium-severity vulnerability in Cesanta Mjs, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2023-04-12.
How severe is CVE-2023-29571?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2023-29571 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.