OCaml 3.12.1 and earlier computes hash values without restricting the ability to trigger…
Priority LOW 28CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
OCaml 3.12.1 and earlier computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.
Why it matters now
EPSS 0.02654 85th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 21
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:inria:ocaml:*:*:*:*:*:*:*:* | up to 3.12.1 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:1.07:*:*:*:*:*:*:* | 1.07 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:2.02:*:*:*:*:*:*:* | 2.02 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:2.04:*:*:*:*:*:*:* | 2.04 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:2.99:alpha:*:*:*:*:*:* | 2.99 alpha | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.00:*:*:*:*:*:*:* | 3.00 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.01:*:*:*:*:*:*:* | 3.01 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.02:*:*:*:*:*:*:* | 3.02 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.03:alpha:*:*:*:*:*:* | 3.03 alpha | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.04:*:*:*:*:*:*:* | 3.04 | Vulnerable | Inria |
- cpe:2.3:a:inria:ocaml:*:*:*:*:*:*:*:* Versions up to 3.12.1 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:1.07:*:*:*:*:*:*:* Versions 1.07 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:2.02:*:*:*:*:*:*:* Versions 2.02 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:2.04:*:*:*:*:*:*:* Versions 2.04 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:2.99:alpha:*:*:*:*:*:* Versions 2.99 alpha Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.00:*:*:*:*:*:*:* Versions 3.00 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.01:*:*:*:*:*:*:* Versions 3.01 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.02:*:*:*:*:*:*:* Versions 3.02 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.03:alpha:*:*:*:*:*:* Versions 3.03 alpha Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.04:*:*:*:*:*:*:* Versions 3.04 Vulnerable ·Inria
Show 11 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:inria:ocaml:3.05:beta:*:*:*:*:*:* | 3.05 beta | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.06:*:*:*:*:*:*:* | 3.06 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.07:*:*:*:*:*:*:* | 3.07 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.07:beta1:*:*:*:*:*:* | 3.07 beta1 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.07:beta2:*:*:*:*:*:* | 3.07 beta2 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.07:pl2:*:*:*:*:*:* | 3.07 pl2 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.08:*:*:*:*:*:*:* | 3.08 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.09:*:*:*:*:*:*:* | 3.09 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.10:*:*:*:*:*:*:* | 3.10 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.11:*:*:*:*:*:*:* | 3.11 | Vulnerable | Inria |
| cpe:2.3:a:inria:ocaml:3.12:*:*:*:*:*:*:* | 3.12 | Vulnerable | Inria |
- cpe:2.3:a:inria:ocaml:3.05:beta:*:*:*:*:*:* Versions 3.05 beta Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.06:*:*:*:*:*:*:* Versions 3.06 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.07:*:*:*:*:*:*:* Versions 3.07 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.07:beta1:*:*:*:*:*:* Versions 3.07 beta1 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.07:beta2:*:*:*:*:*:* Versions 3.07 beta2 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.07:pl2:*:*:*:*:*:* Versions 3.07 pl2 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.08:*:*:*:*:*:*:* Versions 3.08 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.09:*:*:*:*:*:*:* Versions 3.09 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.10:*:*:*:*:*:*:* Versions 3.10 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.11:*:*:*:*:*:*:* Versions 3.11 Vulnerable ·Inria
- cpe:2.3:a:inria:ocaml:3.12:*:*:*:*:*:*:* Versions 3.12 Vulnerable ·Inria
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2012-0839
- 2026-10-03 Alias added: GHSA-7mh4-c5mx-6jq7
References
Other 6
- http://www.nruns.com/_downloads/advisory28122011.pdf
- [caml-list] 20111230 Hashtbl and security
- [caml-list] 20111230 Re: Hashtbl and security
- [oss-security] 20120206 Re: CVE request: Hash DoS vulnerability (ocert-2011-003)
- [oss-security] 20120206 CVE request: Hash DoS vulnerability (ocert-2011-003)
- http://www.ocert.org/advisories/ocert-2011-003.html
Sources
- CVE-2012-0839 · CVE Program
- CVE-2012-0839 · NVD
- FIRST EPSS
- GHSA-7mh4-c5mx-6jq7 · GitHub Advisory Database · CC BY 4.0
- CVE-2012-0839 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences