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Vulnerability Details : CVE-2012-2739

Oracle 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.
Publish Date : 2012-11-28 Last Update Date : 2012-11-28
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 310

- Products Affected By CVE-2012-2739

# Product Type Vendor Product Version Update Edition Language
1 Application Oracle JDK * Update5 * * Version Details Vulnerabilities
2 Application Oracle JDK 1.7.0 Update3 * * Version Details Vulnerabilities
3 Application Oracle JDK 1.7.0 * * * Version Details Vulnerabilities
4 Application Oracle JDK 1.7.0 Update1 * * Version Details Vulnerabilities
5 Application Oracle JDK 1.7.0 Update2 * * Version Details Vulnerabilities
6 Application Oracle JDK 1.7.0 Update4 * * Version Details Vulnerabilities
7 Application Oracle JRE * Update5 * * Version Details Vulnerabilities
8 Application Oracle JRE 1.7.0 Update2 * * Version Details Vulnerabilities
9 Application Oracle JRE 1.7.0 Update4 * * Version Details Vulnerabilities
10 Application Oracle JRE 1.7.0 Update1 * * Version Details Vulnerabilities
11 Application Oracle JRE 1.7.0 Update3 * * Version Details Vulnerabilities
12 Application Oracle JRE 1.7.0 * * * Version Details Vulnerabilities
13 Application Oracle Openjdk * * * * Version Details Vulnerabilities
14 Application Oracle Openjdk 1.6.0 * * * Version Details Vulnerabilities
15 Application Oracle Openjdk 1.8.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Oracle JDK 6
Oracle JRE 6
Oracle Openjdk 3

- References For CVE-2012-2739
MLIST [core-libs-dev] 20120522 Review Request CR#7118743 : Alternative Hashing for String with Hash-based Maps
CERT-VN VU#903934
MLIST [oss-security] 20120616 Re: CVE request: java hashdos vulnerability
MLIST [oss-security] 20120615 CVE request: java hashdos vulnerability CONFIRM

- Metasploit Modules Related To CVE-2012-2739

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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