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CVE-2012-5371 Details

Description

Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before r37575 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 a variant of the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4815.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
http://2012.appsec-forum.ch/conferences/#c17	CVE
http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf	CVE
https://bugzilla.redhat.com/show_bug.cgi?id=875236	CVE	Patch
http://secunia.com/advisories/51253	CVE
http://securitytracker.com/id?1027747	CVE	Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/79993	CVE
https://www.131002.net/data/talks/appsec12_slides.pdf	CVE
http://www.ocert.org/advisories/ocert-2012-001.html	CVE
http://www.osvdb.org/87280	CVE
http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/	CVE	PatchVendor Advisory
http://www.securityfocus.com/bid/56484	CVE
http://www.ubuntu.com/usn/USN-1733-1	CVE
http://2012.appsec-forum.ch/conferences/#c17	[email protected]
http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=875236	[email protected]	Patch
http://secunia.com/advisories/51253	[email protected]
http://securitytracker.com/id?1027747	[email protected]	Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/79993	[email protected]
https://www.131002.net/data/talks/appsec12_slides.pdf	[email protected]
http://www.ocert.org/advisories/ocert-2012-001.html	[email protected]
http://www.osvdb.org/87280	[email protected]
http://www.ruby-lang.org/en/news/2012/11/09/ruby19-hashdos-cve-2012-5371/	[email protected]	PatchVendor Advisory
http://www.securityfocus.com/bid/56484	[email protected]
http://www.ubuntu.com/usn/USN-1733-1	[email protected]

see all 24 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-310	Cryptographic Issues	[email protected]

Affected Products

Product	Versions
ruby-lang ruby	<= 1.9.3 1.9 1.9.1 1.9.2 1.9.3
CPE cpe:2.3:a:ruby-lang:ruby::p286::::::* cpe:2.3:a:ruby-lang:ruby:1.9:::::::* cpe:2.3:a:ruby-lang:ruby:1.9.1:::::::* cpe:2.3:a:ruby-lang:ruby:1.9.2:::::::* cpe:2.3:a:ruby-lang:ruby:1.9.3:::::::* cpe:2.3:a:ruby-lang:ruby:1.9.3:p0:::::: cpe:2.3:a:ruby-lang:ruby:1.9.3:p125:::::: cpe:2.3:a:ruby-lang:ruby:1.9.3:p194:::::: cpe:2.3:a:ruby-lang:ruby:2.0:::::::* Remediation No remediation found in references.

Product

Versions

ruby-lang ruby

<= 1.9.3

1.9

1.9.1

1.9.2

1.9.3

CPE

cpe:2.3:a:ruby-lang:ruby:*:p286:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.2:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.3:p0:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.3:p125:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:1.9.3:p194:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0:*:*:*:*:*:*:*

Remediation

No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	[email protected]
Apr 29, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 29, 2017	CVE Modified	[email protected]
Nov 28, 2012	Initial Analysis	[email protected]