mod_cluster: remotely Segfault Apache http server
Published Sep 26, 2016
7.5
HIGHCVSS 3.0
EPSS 3.64%
Description
mod_cluster, as used in Red Hat JBoss Web Server 2.1, allows remote attackers to cause a denial of service (Apache http server crash) via an MCMP message containing a series of = (equals) characters after a legitimate element.
Affected products
No data.
Configuration 1
- 6.0.0
- 6.4.0
- 2.0.0
- 2.1
Running on/with
- 6.0
- 7.0
Configuration 2
- 28
- 29
- 30
No data.
Red Hat JBoss Enterprise Application Platform 6.4
mod_cluster
Fixed · RHSA-2016:2056
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6
hornetq-native-0:2.3.25-4.SP11_redhat_1.ep6.el6
Fixed · RHSA-2016:2055
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6
httpd-0:2.2.26-54.ep6.el6
Fixed · RHSA-2016:2055
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6
jbcs-httpd24-0:1-3.jbcs.el6
Fixed · RHSA-2016:2055
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6
jbcs-httpd24-openssl-1:1.0.2h-4.jbcs.el6
Fixed · RHSA-2016:2055
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6
mod_cluster-native-0:1.2.13-3.Final_redhat_2.ep6.el6
Fixed · RHSA-2016:2055
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6
mod_jk-0:1.2.41-2.redhat_4.ep6.el6
Fixed · RHSA-2016:2055
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6
tomcat-native-0:1.1.34-5.redhat_1.ep6.el6
Fixed · RHSA-2016:2055
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7
hornetq-native-0:2.3.25-4.SP11_redhat_1.ep6.el7
Fixed · RHSA-2016:2054
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7
httpd22-0:2.2.26-56.ep6.el7
Fixed · RHSA-2016:2054
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7
jbcs-httpd24-0:1-3.jbcs.el7
Fixed · RHSA-2016:2054
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7
jbcs-httpd24-openssl-1:1.0.2h-4.jbcs.el7
Fixed · RHSA-2016:2054
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7
mod_cluster-native-0:1.2.13-3.Final_redhat_2.ep6.el7
Fixed · RHSA-2016:2054
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7
mod_jk-0:1.2.41-2.redhat_4.ep6.el7
Fixed · RHSA-2016:2054
Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7
tomcat-native-0:1.1.34-5.redhat_1.ep6.el7
Fixed · RHSA-2016:2054
Red Hat JBoss Enterprise Web Server 2 for RHEL 6
httpd-0:2.2.26-54.ep6.el6
Fixed · RHSA-2016:1649
Red Hat JBoss Enterprise Web Server 2 for RHEL 6
jbcs-httpd24-0:1-3.jbcs.el6
Fixed · RHSA-2016:1649
Red Hat JBoss Enterprise Web Server 2 for RHEL 6
jbcs-httpd24-openssl-1:1.0.2h-4.jbcs.el6
Fixed · RHSA-2016:1649
Red Hat JBoss Enterprise Web Server 2 for RHEL 6
mod_cluster-0:1.2.13-1.Final_redhat_1.1.ep6.el6
Fixed · RHSA-2016:1649
Red Hat JBoss Enterprise Web Server 2 for RHEL 6
mod_cluster-native-0:1.2.13-3.Final_redhat_2.ep6.el6
Fixed · RHSA-2016:1649
Red Hat JBoss Enterprise Web Server 2 for RHEL 6
mod_jk-0:1.2.41-2.redhat_3.ep6.el6
Fixed · RHSA-2016:1649
Red Hat JBoss Enterprise Web Server 2 for RHEL 6
tomcat-native-0:1.1.34-5.redhat_1.ep6.el6
Fixed · RHSA-2016:1649
Red Hat JBoss Enterprise Web Server 2 for RHEL 7
httpd22-0:2.2.26-56.ep6.el7
Fixed · RHSA-2016:1648
Red Hat JBoss Enterprise Web Server 2 for RHEL 7
jbcs-httpd24-0:1-3.jbcs.el7
Fixed · RHSA-2016:1648
Red Hat JBoss Enterprise Web Server 2 for RHEL 7
jbcs-httpd24-openssl-1:1.0.2h-4.jbcs.el7
Fixed · RHSA-2016:1648
Red Hat JBoss Enterprise Web Server 2 for RHEL 7
mod_cluster-0:1.2.13-1.Final_redhat_1.1.ep6.el7
Fixed · RHSA-2016:1648
Red Hat JBoss Enterprise Web Server 2 for RHEL 7
mod_cluster-native-0:1.2.13-3.Final_redhat_2.ep6.el7
Fixed · RHSA-2016:1648
Red Hat JBoss Enterprise Web Server 2 for RHEL 7
mod_jk-0:1.2.41-2.redhat_3.ep6.el7
Fixed · RHSA-2016:1648
Red Hat JBoss Enterprise Web Server 2 for RHEL 7
tomcat-native-0:1.1.34-5.redhat_1.ep6.el7
Fixed · RHSA-2016:1648
Red Hat JBoss Web Server 2.1
n/a
Fixed · RHSA-2016:1650
Red Hat JBoss Enterprise Web Server 3
mod_cluster
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat JBoss Enterprise Application Platform 6.4 | mod_cluster | Fixed | RHSA-2016:2056 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 | hornetq-native-0:2.3.25-4.SP11_redhat_1.ep6.el6 | Fixed | RHSA-2016:2055 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 | httpd-0:2.2.26-54.ep6.el6 | Fixed | RHSA-2016:2055 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 | jbcs-httpd24-0:1-3.jbcs.el6 | Fixed | RHSA-2016:2055 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 | jbcs-httpd24-openssl-1:1.0.2h-4.jbcs.el6 | Fixed | RHSA-2016:2055 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 | mod_cluster-native-0:1.2.13-3.Final_redhat_2.ep6.el6 | Fixed | RHSA-2016:2055 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 | mod_jk-0:1.2.41-2.redhat_4.ep6.el6 | Fixed | RHSA-2016:2055 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 | tomcat-native-0:1.1.34-5.redhat_1.ep6.el6 | Fixed | RHSA-2016:2055 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 | hornetq-native-0:2.3.25-4.SP11_redhat_1.ep6.el7 | Fixed | RHSA-2016:2054 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 | httpd22-0:2.2.26-56.ep6.el7 | Fixed | RHSA-2016:2054 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 | jbcs-httpd24-0:1-3.jbcs.el7 | Fixed | RHSA-2016:2054 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 | jbcs-httpd24-openssl-1:1.0.2h-4.jbcs.el7 | Fixed | RHSA-2016:2054 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 | mod_cluster-native-0:1.2.13-3.Final_redhat_2.ep6.el7 | Fixed | RHSA-2016:2054 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 | mod_jk-0:1.2.41-2.redhat_4.ep6.el7 | Fixed | RHSA-2016:2054 |
| Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 | tomcat-native-0:1.1.34-5.redhat_1.ep6.el7 | Fixed | RHSA-2016:2054 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 6 | httpd-0:2.2.26-54.ep6.el6 | Fixed | RHSA-2016:1649 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 6 | jbcs-httpd24-0:1-3.jbcs.el6 | Fixed | RHSA-2016:1649 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 6 | jbcs-httpd24-openssl-1:1.0.2h-4.jbcs.el6 | Fixed | RHSA-2016:1649 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 6 | mod_cluster-0:1.2.13-1.Final_redhat_1.1.ep6.el6 | Fixed | RHSA-2016:1649 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 6 | mod_cluster-native-0:1.2.13-3.Final_redhat_2.ep6.el6 | Fixed | RHSA-2016:1649 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 6 | mod_jk-0:1.2.41-2.redhat_3.ep6.el6 | Fixed | RHSA-2016:1649 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 6 | tomcat-native-0:1.1.34-5.redhat_1.ep6.el6 | Fixed | RHSA-2016:1649 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 7 | httpd22-0:2.2.26-56.ep6.el7 | Fixed | RHSA-2016:1648 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 7 | jbcs-httpd24-0:1-3.jbcs.el7 | Fixed | RHSA-2016:1648 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 7 | jbcs-httpd24-openssl-1:1.0.2h-4.jbcs.el7 | Fixed | RHSA-2016:1648 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 7 | mod_cluster-0:1.2.13-1.Final_redhat_1.1.ep6.el7 | Fixed | RHSA-2016:1648 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 7 | mod_cluster-native-0:1.2.13-3.Final_redhat_2.ep6.el7 | Fixed | RHSA-2016:1648 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 7 | mod_jk-0:1.2.41-2.redhat_3.ep6.el7 | Fixed | RHSA-2016:1648 |
| Red Hat JBoss Enterprise Web Server 2 for RHEL 7 | tomcat-native-0:1.1.34-5.redhat_1.ep6.el7 | Fixed | RHSA-2016:1648 |
| Red Hat JBoss Web Server 2.1 | n/a | Fixed | RHSA-2016:1650 |
| Red Hat JBoss Enterprise Web Server 3 | mod_cluster | 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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.64% (0.03640) | 89.20th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.57% (0.03571) | 87.84th | v5 (v2026.06.15) |
| Mar 17, 2025 | 3.22% (0.03218) | 86.20th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.19% (0.03193) | 90.96th | v3 (v2023.03.01) |
| Dec 12, 2024 | 1.79% (0.01794) | 88.59th | v3 (v2023.03.01) |
| Aug 30, 2023 | 1.79% (0.01794) | 86.58th | v3 (v2023.03.01) |
| Jul 18, 2023 | 1.69% (0.01686) | 86.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.51% (0.01508) | 84.87th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (19)
- http://rhn.redhat.com/errata/RHSA-2016-1648.html vendor-advisoryx_refsource_REDHATVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1649.html vendor-advisoryx_refsource_REDHATVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1650.html vendor-advisoryx_refsource_REDHATBroken Link
- http://rhn.redhat.com/errata/RHSA-2016-2054.html vendor-advisoryx_refsource_REDHATVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2055.html vendor-advisoryx_refsource_REDHATVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2056.html vendor-advisoryx_refsource_REDHATBroken Link
- http://www.securityfocus.com/bid/92584 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2016-3110 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1326320 x_refsource_CONFIRMIssue Tracking
- https://github.com/advisories/GHSA-68qq-3phh-53j7 Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6JMA2YLPK6SEUVF5Q3QEANHYEPRZA2RI vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CX5QNNIVAUB2VVDV6TR3YMFTL6VRKOBO vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HE5YZTBZRXCMQFT5LDLZG2HAYBKMYQLL vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6JMA2YLPK6SEUVF5Q3QEANHYEPRZA2RI
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CX5QNNIVAUB2VVDV6TR3YMFTL6VRKOBO
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HE5YZTBZRXCMQFT5LDLZG2HAYBKMYQLL
- https://nvd.nist.gov/vuln/detail/CVE-2016-3110
- https://web.archive.org/web/20200227231527/http://www.securityfocus.com/bid/92584
- https://www.cve.org/CVERecord?id=CVE-2016-3110
Change history (0)
No recorded changes yet.