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    CVE-2012-4534

    org/apache/tomcat/util/net/NioEndpoint.java in Apache Tomcat 6.x before 6.0.36 and 7.x before 7.0.28, when the NIO connector is used in conjunction with sendfile and HTTPS, allows remote attackers to cause a denial of service (infinite loop) by terminating the connection during the reading of a response.

    Published:Dec 4, 2012
    Last Modified:Apr 11, 2025
    EPS:Dec 19, 2012
    EPSS Score:0.2277
    CVSS Score:2.6

    Affected Products

    Vendor
    Apache
    Product
    Tomcat
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Jboss Enterprise Web Server

    Exploits

    https://issues.apache.org/bugzilla/show_bug.cgi?id=52858https://issues.apache.org/bugzilla/show_bug.cgi?id=52858

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-73180 (CVSS 6.8) — Insufficient Session Expiration vulnerability in Apache Tomcat meant that if the session ID for an authenticat…
    CVE-2026-68763 (CVSS 7.5) — Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog …
    CVE-2026-68569 (CVSS 8.1) — Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPN…
    CVE-2026-68525 (CVSS 9.1) — Incorrect Authorization vulnerability in Apache Tomcat's FORM authentication process allows the bypassing of a…
    CVE-2026-66422 (CVSS 8.1) — Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly…
    CVE-2026-65927 (CVSS 7.5) — Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite pr…
    CVE-2026-65905 (CVSS 9.8) — Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before wind…
    CVE-2026-65637 (CVSS 9.8) — Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990. This iss…
    CVE-2026-65183 (CVSS 8.1) — Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat when creating unix domain soc…
    CVE-2026-65182 (CVSS 9.1) — Improper Access Control, Incorrect Authorization vulnerability in Apache Tomcat leads to security constraint b…

    References

    http://archives.neohapsis.com/archives/bugtraq/2012-12/0043.html
    http://lists.opensuse.org/opensuse-updates/2013-01/msg00051.html
    http://lists.opensuse.org/opensuse-updates/2013-01/msg00061.html
    http://lists.opensuse.org/opensuse-updates/2013-01/msg00080.html
    http://marc.info/?l=bugtraq&m=136612293908376&w=2
    http://marc.info/?l=bugtraq&m=139344343412337&w=2
    http://rhn.redhat.com/errata/RHSA-2013-0623.html
    http://secunia.com/advisories/57126
    http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/apache/tomcat/util/net/NioEndpoint.java?r1=1340218&r2=1340217&pathrev=1340218
    http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml?r1=1340218&r2=1340217&pathrev=1340218
    http://svn.apache.org/viewvc?view=revision&revision=1340218
    http://tomcat.apache.org/security-6.html
    http://tomcat.apache.org/security-7.html
    http://www.securityfocus.com/bid/56813
    http://www.securitytracker.com/id?1027836
    http://www.ubuntu.com/usn/USN-1685-1
    https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03748878
    https://issues.apache.org/bugzilla/show_bug.cgi?id=52858
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19398
    http://archives.neohapsis.com/archives/bugtraq/2012-12/0043.html
    http://lists.opensuse.org/opensuse-updates/2013-01/msg00051.html
    http://lists.opensuse.org/opensuse-updates/2013-01/msg00061.html
    http://lists.opensuse.org/opensuse-updates/2013-01/msg00080.html
    http://marc.info/?l=bugtraq&m=136612293908376&w=2
    http://marc.info/?l=bugtraq&m=139344343412337&w=2
    http://rhn.redhat.com/errata/RHSA-2013-0623.html
    http://secunia.com/advisories/57126
    http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/apache/tomcat/util/net/NioEndpoint.java?r1=1340218&r2=1340217&pathrev=1340218
    http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml?r1=1340218&r2=1340217&pathrev=1340218
    http://svn.apache.org/viewvc?view=revision&revision=1340218
    http://tomcat.apache.org/security-6.html
    http://tomcat.apache.org/security-7.html
    http://www.securityfocus.com/bid/56813
    http://www.securitytracker.com/id?1027836
    http://www.ubuntu.com/usn/USN-1685-1
    https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03748878
    https://issues.apache.org/bugzilla/show_bug.cgi?id=52858
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19398

    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