jruby: Murmur hash function collisions (oCERT-2012-001)
Published Nov 28, 2012
5.0
MEDIUMCVSS 2.0
EPSS 2.25%
Description
JRuby computes hash values without properly 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, as demonstrated by a universal multicollision attack against the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4838.
Affected products
No data.
No data.
Fuse ESB Enterprise 7.1.0
n/a
Fixed · RHSA-2012:1604
Red Hat JBoss SOA Platform 5.3
n/a
Fixed · RHSA-2013:0533
Red Hat JBoss SOA Platform 5
jruby
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Fuse ESB Enterprise 7.1.0 | n/a | Fixed | RHSA-2012:1604 |
| Red Hat JBoss SOA Platform 5.3 | n/a | Fixed | RHSA-2013:0533 |
| Red Hat JBoss SOA Platform 5 | jruby | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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 | 2.25% (0.02249) | 82.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.25% (0.02249) | 80.55th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.60% (0.00604) | 67.06th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.82% (0.01820) | 71.72th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.60% (0.00604) | 67.74th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.23% (0.00233) | 62.22th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.23% (0.00233) | 61.54th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.23% (0.00233) | 59.53th | 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 (12)
- http://2012.appsec-forum.ch/conferences/#c17 x_refsource_MISC
- http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf x_refsource_MISC
- http://jruby.org/2012/12/03/jruby-1-7-1
- http://rhn.redhat.com/errata/RHSA-2013-0533.html vendor-advisoryx_refsource_REDHAT
- http://www.ocert.org/advisories/ocert-2012-001.html x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2012-5370 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=880671 x_refsource_CONFIRMIssue Tracking
- https://github.com/advisories/GHSA-fmmq-j7pq-f85c Advisory
- https://github.com/jruby/jruby/commit/5e4aab28b26fd127112b76fabfac9a33b64caf77
- https://nvd.nist.gov/vuln/detail/CVE-2012-5370
- https://www.131002.net/data/talks/appsec12_slides.pdf x_refsource_MISC
- https://www.cve.org/CVERecord?id=CVE-2012-5370
| Link | Providers | Tags |
|---|---|---|
| http://2012.appsec-forum.ch/conferences/#c17 | x_refsource_MISC | |
| http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf | x_refsource_MISC | |
| http://jruby.org/2012/12/03/jruby-1-7-1 | ||
| http://rhn.redhat.com/errata/RHSA-2013-0533.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.ocert.org/advisories/ocert-2012-001.html | x_refsource_MISC | |
| https://access.redhat.com/security/cve/CVE-2012-5370 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=880671 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/advisories/GHSA-fmmq-j7pq-f85c | Advisory | |
| https://github.com/jruby/jruby/commit/5e4aab28b26fd127112b76fabfac9a33b64caf77 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2012-5370 | ||
| https://www.131002.net/data/talks/appsec12_slides.pdf | x_refsource_MISC | |
| https://www.cve.org/CVERecord?id=CVE-2012-5370 |
Change history (0)
No recorded changes yet.