Tomcat - Denial Of Service when using NIO+SSL+sendfile
Published Dec 19, 2012
2.6
LOWCVSS 2.0
EPSS 7.45%
Description
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.
Affected products
No data.
Configuration 1
- 6.0
- 6.0.0
- 6.0.0
- 6.0.1
- 6.0.1
- 6.0.2
- 6.0.2
- 6.0.2
- 6.0.3
- 6.0.4
- 6.0.4
- 6.0.5
- 6.0.6
- 6.0.6
- 6.0.7
- 6.0.7
- 6.0.7
- 6.0.8
- 6.0.8
- 6.0.9
- 6.0.9
- 6.0.10
- 6.0.11
- 6.0.12
- 6.0.13
- 6.0.14
- 6.0.15
- 6.0.16
- 6.0.17
- 6.0.18
- 6.0.19
- 6.0.20
- 6.0.24
- 6.0.26
- 6.0.27
- 6.0.28
- 6.0.29
- 6.0.30
- 6.0.31
- 6.0.32
- 6.0.33
- 6.0.35
Configuration 2
- 7.0.0
- 7.0.0
- 7.0.1
- 7.0.2
- 7.0.2
- 7.0.3
- 7.0.4
- 7.0.4
- 7.0.5
- 7.0.6
- 7.0.7
- 7.0.8
- 7.0.9
- 7.0.10
- 7.0.11
- 7.0.12
- 7.0.13
- 7.0.14
- 7.0.15
- 7.0.16
- 7.0.17
- 7.0.18
- 7.0.19
- 7.0.20
- 7.0.21
- 7.0.22
- 7.0.23
- 7.0.25
No data.
Red Hat Enterprise Linux 6
tomcat6-0:6.0.24-52.el6_4
Fixed · RHSA-2013:0623
Red Hat JBoss Enterprise Web Server 2 for RHEL 5
tomcat6-0:6.0.35-6_patch_06.ep6.el5
Fixed · RHSA-2013:0266
Red Hat JBoss Enterprise Web Server 2 for RHEL 6
tomcat6-0:6.0.35-29_patch_06.ep6.el6
Fixed · RHSA-2013:0266
Red Hat JBoss Web Server 2.0
n/a
Fixed · RHSA-2013:0265
Red Hat JBoss BRMS 5
jbossweb
Not affected
Red Hat JBoss Data Grid 6
jbossweb
Not affected
Red Hat JBoss Enterprise Web Server 2
tomcat7
Not affected
Red Hat JBoss Operations Network 3
jbossweb
Not affected
Red Hat JBoss Portal 5
jbossweb
Not affected
Red Hat JBoss SOA Platform 5
jbossweb
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | tomcat6-0:6.0.24-52.el6_4 | Fixed | RHSA-2013:0623 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 5 | tomcat6-0:6.0.35-6_patch_06.ep6.el5 | Fixed | RHSA-2013:0266 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 6 | tomcat6-0:6.0.35-29_patch_06.ep6.el6 | Fixed | RHSA-2013:0266 |
| Red Hat JBoss Web Server 2.0 | n/a | Fixed | RHSA-2013:0265 |
| Red Hat JBoss BRMS 5 | jbossweb | Not affected | n/a |
| Red Hat JBoss Data Grid 6 | jbossweb | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 2 | tomcat7 | Not affected | n/a |
| Red Hat JBoss Operations Network 3 | jbossweb | Not affected | n/a |
| Red Hat JBoss Portal 5 | jbossweb | Not affected | n/a |
| Red Hat JBoss SOA Platform 5 | jbossweb | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:H/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.45% (0.07452) | 94.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.45% (0.07452) | 93.65th | v5 (v2026.06.15) |
| Dec 16, 2025 | 22.77% (0.22770) | 95.68th | v4 (v2025.03.14) |
| Dec 10, 2025 | 31.07% (0.31071) | 96.56th | v4 (v2025.03.14) |
| Jun 18, 2025 | 22.77% (0.22770) | 95.58th | v4 (v2025.03.14) |
| Mar 30, 2025 | 36.56% (0.36561) | 96.80th | v4 (v2025.03.14) |
| Mar 29, 2025 | 39.75% (0.39749) | 95.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 36.56% (0.36561) | 96.77th | v4 (v2025.03.14) |
| Dec 17, 2024 | 12.76% (0.12760) | 95.45th | v3 (v2023.03.01) |
| Jan 13, 2024 | 70.48% (0.70478) | 97.75th | v3 (v2023.03.01) |
| Sep 6, 2023 | 89.18% (0.89180) | 98.31th | v3 (v2023.03.01) |
| Jul 7, 2023 | 90.97% (0.90972) | 98.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 92.37% (0.92371) | 98.38th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.34% (0.07344) | 92.59th | v2 (v2022.01.01) |
| Feb 13, 2023 | 7.34% (0.07344) | 92.29th | v2 (v2022.01.01) |
| Feb 3, 2023 | 5.24% (0.05242) | 89.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.34% (0.07344) | 91.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.34% (0.07344) | 80.64th | v2 (v2022.01.01) |
References (23)
- http://archives.neohapsis.com/archives/bugtraq/2012-12/0043.html mailing-listx_refsource_BUGTRAQ
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00051.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00061.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00080.html vendor-advisoryx_refsource_SUSE
- http://marc.info/?l=bugtraq&m=136612293908376&w=2 vendor-advisoryx_refsource_HP
- http://marc.info/?l=bugtraq&m=139344343412337&w=2 vendor-advisoryx_refsource_HP
- http://rhn.redhat.com/errata/RHSA-2013-0623.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/57126 third-party-advisoryx_refsource_SECUNIA
- http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/apache/tomcat/util/net/NioEndpoint.java?r1=1340218&r2=1340217&pathrev=1340218 x_refsource_CONFIRMPatch
- http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/webapps/docs/changelog.xml?r1=1340218&r2=1340217&pathrev=1340218 x_refsource_CONFIRMPatch
- http://svn.apache.org/viewvc?view=revision&revision=1340218 x_refsource_CONFIRM
- http://tomcat.apache.org/security-6.html x_refsource_CONFIRMVendor Advisory
- http://tomcat.apache.org/security-7.html x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/56813 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1027836 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-1685-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2012-4534 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=883637 Issue Tracking
- https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03748878 vendor-advisoryx_refsource_HP
- https://issues.apache.org/bugzilla/show_bug.cgi?id=52858 x_refsource_CONFIRMExploit
- https://nvd.nist.gov/vuln/detail/CVE-2012-4534
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19398 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2012-4534
Change history (0)
No recorded changes yet.