jruby: hash table collisions DoS (oCERT-2011-003)
Published Dec 30, 2011
5.0
MEDIUMCVSS 2.0
EPSS 4.20%
Description
JRuby before 1.6.5.1 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.
No data.
Red Hat JBoss SOA Platform 5.3
n/a
Fixed · RHSA-2012:1125
Red Hat JBoss SOA Platform 5
jruby
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat JBoss SOA Platform 5.3 | n/a | Fixed | RHSA-2012:1125 |
| 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 | 4.20% (0.04203) | 90.65th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.36% (0.04360) | 89.96th | v5 (v2026.06.15) |
| Mar 30, 2025 | 7.27% (0.07274) | 90.79th | v4 (v2025.03.14) |
| Mar 29, 2025 | 13.31% (0.13307) | 90.25th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.27% (0.07274) | 90.99th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.98% (0.00976) | 84.07th | v3 (v2023.03.01) |
| Mar 30, 2024 | 0.98% (0.00976) | 83.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.98% (0.00976) | 81.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (14)
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html mailing-listx_refsource_BUGTRAQBroken Link
- http://jruby.org/2011/12/27/jruby-1-6-5-1.html x_refsource_CONFIRMVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2012-1232.html vendor-advisoryx_refsource_REDHATBroken Link
- http://secunia.com/advisories/47407 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/50084 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://security.gentoo.org/glsa/glsa-201207-06.xml vendor-advisoryx_refsource_GENTOOThird Party Advisory
- http://www.kb.cert.org/vuls/id/903934 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.nruns.com/_downloads/advisory28122011.pdf x_refsource_MISCThird Party Advisory
- http://www.ocert.org/advisories/ocert-2011-003.html x_refsource_MISCThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2011-4838 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=770820 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/72019 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2011-4838
- https://www.cve.org/CVERecord?id=CVE-2011-4838
Change history (0)
No recorded changes yet.