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CVE-2012-5370

20
FAUCET Score

CVE-2012-5370 describes a denial-of-service vulnerability in JRuby, affecting applications that utilize hash tables. Attackers can exploit this by crafting specific input to trigger hash collisions, leading to excessive CPU consumption. This vulnerability has a CVSS score of 5.0, indicating a medium severity with a network attack vector, low complexity, and potential for partial availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:jruby:jruby:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.25%
Probability of exploitation in next 30 days
EPSS Percentile
81.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0225 is in the 71st percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

mavenpatch availablevia ghsa
Product: org.jruby:jruby-parentFixed in: 1.7.1
redhatpatch availablevia redhat_api
Product: Fuse ESB Enterprise 7.1.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss SOA Platform 5.3
View patch
redhatno patchvia redhat_api
Product: Red Hat JBoss SOA Platform 5Fixed in: jruby

Vendor Advisories (2)

mavenGHSA-fmmq-j7pq-f85cmedium

JRuby denial of service via Hash Collision

May 17, 2022
redhatCVE-2012-5370Moderate

jruby: Murmur hash function collisions (oCERT-2012-001)

Nov 23, 2012

References

2012.appsec-forum.ch / conferences
asfws12.files.wordpress.com / 2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf
rhn.redhat.com / errata/RHSA-2013-0533.html
bugzilla.redhat.com / show_bug.cgi
131002.net / data/talks/appsec12_slides.pdf
ocert.org / advisories/ocert-2012-001.html