ocaml: hash table collisions CPU usage DoS (oCERT-2011-003)
Published Feb 8, 2012
5.0
MEDIUMCVSS 2.0
EPSS 2.65%
Description
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.
Affected products
No data.
- ≤ 3.12.1
- 1.07
- 2.02
- 2.04
- 2.99
- 3.00
- 3.01
- 3.02
- 3.03
- 3.04
- 3.05
- 3.06
- 3.07
- 3.07
- 3.07
- 3.07
- 3.08
- 3.09
- 3.10
- 3.11
- 3.12
No data.
Red Hat Enterprise Linux 6
ocaml
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | ocaml | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
The Red Hat Security Response Team has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.65% (0.02654) | 85.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.75% (0.02754) | 84.26th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.68% (0.00678) | 69.18th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.09% (0.02091) | 73.37th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.68% (0.00678) | 69.84th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.65% (0.00646) | 79.98th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.65% (0.00646) | 78.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.65% (0.00646) | 76.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (11)
- http://openwall.com/lists/oss-security/2012/02/07/1 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2012/02/07/2 mailing-listx_refsource_MLIST
- http://secunia.com/advisories/47853 third-party-advisoryx_refsource_SECUNIA
- http://www.mail-archive.com/caml-list%40inria.fr/msg01477.html mailing-listx_refsource_MLIST
- http://www.mail-archive.com/caml-list%40inria.fr/msg01478.html mailing-listx_refsource_MLIST
- http://www.nruns.com/_downloads/advisory28122011.pdf x_refsource_MISC
- http://www.ocert.org/advisories/ocert-2011-003.html x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2012-0839 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=787888 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-0839
- https://www.cve.org/CVERecord?id=CVE-2012-0839
| Link | Providers | Tags |
|---|---|---|
| http://openwall.com/lists/oss-security/2012/02/07/1 | mailing-listx_refsource_MLIST | |
| http://openwall.com/lists/oss-security/2012/02/07/2 | mailing-listx_refsource_MLIST | |
| http://secunia.com/advisories/47853 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.mail-archive.com/caml-list%40inria.fr/msg01477.html | mailing-listx_refsource_MLIST | |
| http://www.mail-archive.com/caml-list%40inria.fr/msg01478.html | mailing-listx_refsource_MLIST | |
| http://www.nruns.com/_downloads/advisory28122011.pdf | x_refsource_MISC | |
| http://www.ocert.org/advisories/ocert-2011-003.html | x_refsource_MISC | |
| https://access.redhat.com/security/cve/CVE-2012-0839 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=787888 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-0839 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-0839 |
Change history (0)
No recorded changes yet.