CVE-2012-2739

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2012-2739
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2012-11-28 13:03:09 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionOracle Java SE before 7 Update 6, and OpenJDK 7 before 7u6 build 12 and 8 before build 39, 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.

Risk And Classification

Primary CVSS: v2.0 5 from [email protected]

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

Problem Types: CWE-310 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Oracle Jdk 1.7.0 All All All
Application Oracle Jdk 1.7.0 update1 All All
Application Oracle Jdk 1.7.0 update2 All All
Application Oracle Jdk 1.7.0 update3 All All
Application Oracle Jdk 1.7.0 update4 All All
Application Oracle Jdk All update5 All All
Application Oracle Jre 1.7.0 All All All
Application Oracle Jre 1.7.0 update1 All All
Application Oracle Jre 1.7.0 update2 All All
Application Oracle Jre 1.7.0 update3 All All
Application Oracle Jre 1.7.0 update4 All All
Application Oracle Jre All update5 All All
Application Oracle Openjdk 1.6.0 All All All
Application Oracle Openjdk 1.8.0 All All All
Application Oracle Openjdk All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Bug 750533 – CVE-2012-2739 java: hash table collisions CPU usage DoS (oCERT-2011-003) af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
Java security and related topics: Investigating the HashDoS issue af854a3a-2127-422b-91ae-364da2661108 armoredbarista.blogspot.de Exploit
oCERT.org - oCERT Advisories af854a3a-2127-422b-91ae-364da2661108 www.ocert.org
VU#903934 - Hash table implementations vulnerable to algorithmic complexity attacks af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org US Government Resource
oss-security - CVE request: java hashdos vulnerability af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
oss-security - Re: CVE request: java hashdos vulnerability af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
Review Request CR#7118743 : Alternative Hashing for String with Hash-based Maps af854a3a-2127-422b-91ae-364da2661108 mail.openjdk.java.net Vendor Advisory
Best 7 Best Internet Security Software in 2019 af854a3a-2127-422b-91ae-364da2661108 www.nruns.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report