CVE-2023-29569 json
Cesanta MJS v2.20.0 was discovered to contain a SEGV vulnerability via ffi_cb_impl_wpwwwww at src/mjs_ffi.c.
published 2023-04-14 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-33110
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
Cesanta MJS v2.20.0 was discovered to contain a SEGV vulnerability via ffi_cb_impl_wpwwwww at src/mjs_ffi.c. This vulnerability can lead to a Denial of Service (DoS).
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/z1r00/fuzz_vuln/blob/main/mjs/SEGV/mjs_ffi/readme.md referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/cesanta/mjs/issues/239 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
References
-
github.com
/z1r00/fuzz_vuln/blob/main/mjs/SEGV/mjs_ffi/readme.md
exploit
-
github.com
/cesanta/mjs/issues/239
exploit, issue-tracking, third-party-advisory
Sources
- CVE List CVE-2023-29569
- NVD CVE-2023-29569
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