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    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.

    Published:Dec 28, 2011
    Last Modified:Apr 11, 2025
    EPS:Nov 28, 2012
    EPSS Score:0.01045
    CVSS Score:5

    Affected Products

    Vendor
    Oracle
    Product
    Jdk
    Vendor
    Oracle
    Product
    Jre
    Vendor
    Oracle
    Product
    Openjdk

    Exploits

    http://armoredbarista.blogspot.de/2012/02/investigating-hashdos-issue.htmlhttp://armoredbarista.blogspot.de/2012/02/investigating-hashdos-issue.html

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-47021 (CVSS 5.3) — Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Orac…
    CVE-2026-22003 (CVSS 6) — Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: H…
    CVE-2026-34282 (CVSS 7.5) — Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Orac…
    CVE-2026-22007 (CVSS 2.9) — Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Orac…
    CVE-2026-34268 (CVSS 2.9) — Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Orac…
    CVE-2026-22008 (CVSS 3.7) — Vulnerability in Oracle Java SE (component: Libraries). The supported version that is affected is Oracle Jav…
    CVE-2026-22021 (CVSS 5.3) — Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Orac…
    CVE-2026-22013 (CVSS 5.3) — Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Orac…

    References

    http://armoredbarista.blogspot.de/2012/02/investigating-hashdos-issue.html
    http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-May/010238.html
    http://www.kb.cert.org/vuls/id/903934
    http://www.nruns.com/_downloads/advisory28122011.pdf
    http://www.ocert.org/advisories/ocert-2011-003.html
    http://www.openwall.com/lists/oss-security/2012/06/15/12
    http://www.openwall.com/lists/oss-security/2012/06/17/1
    https://bugzilla.redhat.com/show_bug.cgi?id=750533
    http://armoredbarista.blogspot.de/2012/02/investigating-hashdos-issue.html
    http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-May/010238.html
    http://www.kb.cert.org/vuls/id/903934
    http://www.nruns.com/_downloads/advisory28122011.pdf
    http://www.ocert.org/advisories/ocert-2011-003.html
    http://www.openwall.com/lists/oss-security/2012/06/15/12
    http://www.openwall.com/lists/oss-security/2012/06/17/1
    https://bugzilla.redhat.com/show_bug.cgi?id=750533

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High