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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (19.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cesanta Mjs — versions 2.20.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/z1r00/fuzz_vuln/blob/main/mjs/SEGV/mjs_gc/readme.md (Exploit, Third Party Advisory)
- github.com/cesanta/mjs/issues/241 (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.