mod_jk: Buffer overflow when concatenating virtual host name and URI
Published Apr 12, 2017
9.8
CRITICALCVSS 3.0
EPSS 22.68%
Description
Buffer overflow in Apache Tomcat Connectors (mod_jk) before 1.2.42.
Affected products
No data.
- < 1.2.42
No data.
JBoss Core Services on RHEL 6
jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 6
jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el6
Fixed · RHSA-2017:0193
JBoss Core Services on RHEL 7
jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el7
Fixed · RHSA-2017:0194
JBoss Core Services on RHEL 7
jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el7
Fixed · RHSA-2017:0194
Red Hat JBoss Core Services
n/a
Fixed · RHSA-2016:2957
Red Hat JBoss Enterprise Application Platform 5
mod_jk
Under investigation
Red Hat JBoss Enterprise Application Platform 6
mod_jk
Affected
Red Hat JBoss Enterprise Web Server 1
mod_jk
Under investigation
Red Hat JBoss Enterprise Web Server 2
mod_jk
Affected
Red Hat JBoss Enterprise Web Server 3
mod_jk
Affected
Red Hat JBoss Web Server 3
mod_jk
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| JBoss Core Services on RHEL 6 | jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el6 | Fixed | RHSA-2017:0193 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-httpd-0:2.4.23-102.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_auth_kerb-0:5.4-35.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_bmx-0:0.9.6-14.GA.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_cluster-native-0:1.3.5-13.Final_redhat_1.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_jk-0:1.2.41-14.redhat_1.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_rt-0:2.4.1-16.GA.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_security-0:2.9.1-18.GA.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-nghttp2-0:1.12.0-9.jbcs.el7 | Fixed | RHSA-2017:0194 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-openssl-1:1.0.2h-12.jbcs.el7 | Fixed | RHSA-2017:0194 |
| Red Hat JBoss Core Services | n/a | Fixed | RHSA-2016:2957 |
| Red Hat JBoss Enterprise Application Platform 5 | mod_jk | Under investigation | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | mod_jk | Affected | n/a |
| Red Hat JBoss Enterprise Web Server 1 | mod_jk | Under investigation | n/a |
| Red Hat JBoss Enterprise Web Server 2 | mod_jk | Affected | n/a |
| Red Hat JBoss Enterprise Web Server 3 | mod_jk | Affected | n/a |
| Red Hat JBoss Web Server 3 | mod_jk | 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:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/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 (49 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 22.68% (0.22685) | 97.66th | v5 (v2026.06.15) |
| Sep 15, 2026 | 22.68% (0.22685) | 97.60th | v5 (v2026.06.15) |
| Jun 15, 2026 | 18.99% (0.18989) | 96.93th | v5 (v2026.06.15) |
| May 31, 2026 | 30.39% (0.30394) | 96.78th | v4 (v2025.03.14) |
| May 28, 2026 | 36.55% (0.36551) | 97.20th | v4 (v2025.03.14) |
| Apr 2, 2026 | 29.48% (0.29479) | 96.58th | v4 (v2025.03.14) |
| Mar 4, 2026 | 30.94% (0.30937) | 96.64th | v4 (v2025.03.14) |
| Mar 1, 2026 | 6.60% (0.06596) | 91.03th | v4 (v2025.03.14) |
| Feb 26, 2026 | 30.94% (0.30937) | 96.63th | v4 (v2025.03.14) |
| Feb 4, 2026 | 34.23% (0.34234) | 96.86th | v4 (v2025.03.14) |
| Feb 1, 2026 | 5.79% (0.05794) | 90.33th | v4 (v2025.03.14) |
| Jan 4, 2026 | 34.23% (0.34234) | 96.83th | v4 (v2025.03.14) |
| Jan 1, 2026 | 5.79% (0.05794) | 90.28th | v4 (v2025.03.14) |
| Dec 4, 2025 | 34.23% (0.34234) | 96.80th | v4 (v2025.03.14) |
| Dec 1, 2025 | 5.79% (0.05794) | 90.20th | v4 (v2025.03.14) |
| Nov 4, 2025 | 34.23% (0.34234) | 96.78th | v4 (v2025.03.14) |
| Nov 1, 2025 | 5.79% (0.05794) | 90.14th | v4 (v2025.03.14) |
| Oct 4, 2025 | 34.23% (0.34234) | 96.84th | v4 (v2025.03.14) |
| Oct 1, 2025 | 5.79% (0.05794) | 90.17th | v4 (v2025.03.14) |
| Sep 6, 2025 | 34.23% (0.34234) | 96.85th | v4 (v2025.03.14) |
| Sep 1, 2025 | 5.79% (0.05794) | 90.22th | v4 (v2025.03.14) |
| Aug 4, 2025 | 34.23% (0.34234) | 96.81th | v4 (v2025.03.14) |
| Aug 1, 2025 | 5.79% (0.05794) | 90.22th | v4 (v2025.03.14) |
| Jul 4, 2025 | 34.23% (0.34234) | 96.78th | v4 (v2025.03.14) |
| Jul 1, 2025 | 5.79% (0.05794) | 90.12th | v4 (v2025.03.14) |
| Jun 6, 2025 | 34.23% (0.34234) | 96.75th | v4 (v2025.03.14) |
| Jun 1, 2025 | 5.79% (0.05794) | 90.08th | v4 (v2025.03.14) |
| May 4, 2025 | 34.23% (0.34234) | 96.73th | v4 (v2025.03.14) |
| May 1, 2025 | 5.79% (0.05794) | 90.02th | v4 (v2025.03.14) |
| Apr 13, 2025 | 34.23% (0.34234) | 96.66th | v4 (v2025.03.14) |
| Apr 12, 2025 | 5.79% (0.05794) | 89.64th | v4 (v2025.03.14) |
| Mar 30, 2025 | 34.23% (0.34234) | 96.63th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.05% (0.09053) | 87.59th | v4 (v2025.03.14) |
| Mar 25, 2025 | 34.23% (0.34234) | 96.60th | v4 (v2025.03.14) |
| Mar 24, 2025 | 5.79% (0.05794) | 89.58th | v4 (v2025.03.14) |
| Mar 21, 2025 | 34.23% (0.34234) | 96.66th | v4 (v2025.03.14) |
| Mar 20, 2025 | 5.79% (0.05794) | 89.69th | v4 (v2025.03.14) |
| Mar 19, 2025 | 34.23% (0.34234) | 96.47th | v4 (v2025.03.14) |
| Mar 18, 2025 | 5.79% (0.05794) | 89.86th | v4 (v2025.03.14) |
| Mar 17, 2025 | 34.23% (0.34234) | 96.60th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.45% (0.00452) | 75.96th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.45% (0.00452) | 74.39th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.45% (0.00452) | 72.26th | v3 (v2023.03.01) |
| Jul 17, 2023 | 0.54% (0.00536) | 74.10th | v3 (v2023.03.01) |
| Jun 8, 2023 | 0.53% (0.00529) | 73.75th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.57% (0.00570) | 74.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.24% (0.05242) | 89.75th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.24% (0.05242) | 88.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.24% (0.05242) | 75.28th | v2 (v2022.01.01) |
References (20)
- http://packetstormsecurity.com/files/139071/Apache-Tomcat-JK-ISAPI-Connector-1.2.41-Buffer-Overflow.html x_refsource_MISCExploitMitigationThird Party AdvisoryVDB Entry
- http://rhn.redhat.com/errata/RHSA-2016-2957.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://seclists.org/fulldisclosure/2016/Oct/44 mailing-listx_refsource_FULLDISCMailing ListThird Party Advisory
- http://tomcat.apache.org/security-jk.html x_refsource_CONFIRMVendor Advisory
- http://www.openwall.com/lists/oss-security/2016/10/06/4 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/93429 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1036969 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:0193 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0194 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-6808 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1382352 Issue Tracking
- https://lists.apache.org/thread.html/277d42b48b6e9aef50949c0dcc79ce21693091d73da246b3c1981925%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/5b7a23e245c93235c503900da854a143596d901bf1a1f67e851a5de4%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/8d2a579bbd977c225c70cb23b0ec54865fb0dab5da3eff1e060c9935%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r5c616dfc49156e4b06ffab842800c80f4425924d0f20c452c127a53c%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2016-6808
- https://tomcat.apache.org/security-jk.html#Fixed_in_Apache_Tomcat_JK_Connector_1.2.42
- https://www.cve.org/CVERecord?id=CVE-2016-6808
Change history (0)
No recorded changes yet.