tomcat6 Denial-Of-Service with AJP connection
Published Jun 5, 2009
5.0
MEDIUMCVSS 2.0
EPSS 10.05%
Description
Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when the Java AJP connector and mod_jk load balancing are used, allows remote attackers to cause a denial of service (application outage) via a crafted request with invalid headers, related to temporary blocking of connectors that have encountered errors, as demonstrated by an error involving a malformed HTTP Host header.
Affected products
No data.
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.3
- 4.1.4
- 4.1.5
- 4.1.6
- 4.1.7
- 4.1.8
- 4.1.9
- 4.1.9
- 4.1.10
- 4.1.11
- 4.1.12
- 4.1.13
- 4.1.14
- 4.1.15
- 4.1.16
- 4.1.17
- 4.1.18
- 4.1.19
- 4.1.20
- 4.1.21
- 4.1.22
- 4.1.23
- 4.1.24
- 4.1.25
- 4.1.26
- 4.1.27
- 4.1.28
- 4.1.29
- 4.1.30
- 4.1.31
- 4.1.32
- 4.1.33
- 4.1.34
- 4.1.35
- 4.1.36
- 4.1.37
- 4.1.38
- 4.1.39
- 5.5.0
- 5.5.1
- 5.5.2
- 5.5.3
- 5.5.4
- 5.5.5
- 5.5.6
- 5.5.7
- 5.5.8
- 5.5.9
- 5.5.10
- 5.5.11
- 5.5.12
- 5.5.13
- 5.5.14
- 5.5.15
- 5.5.16
- 5.5.17
- 5.5.18
- 5.5.19
- 5.5.20
- 5.5.21
- 5.5.22
- 5.5.23
- 5.5.24
- 5.5.25
- 5.5.26
- 5.5.27
- 6.0.0
- 6.0.1
- 6.0.2
- 6.0.3
- 6.0.4
- 6.0.5
- 6.0.6
- 6.0.7
- 6.0.8
- 6.0.9
- 6.0.10
- 6.0.11
- 6.0.12
- 6.0.13
- 6.0.14
- 6.0.15
- 6.0.16
No data.
JBEWS 1.0 for RHEL 4
tomcat5-0:5.5.23-1.patch07.19.ep5.el4
Fixed · RHSA-2009:1454
JBEWS 1.0 for RHEL 4
tomcat6-0:6.0.18-11.3.ep5.el4
Fixed · RHSA-2009:1506
RHAPS Version 2 for RHEL 4
tomcat5-0:5.5.23-0jpp_4rh.16
Fixed · RHSA-2009:1562
Red Hat Certificate System 7.3
ant-0:1.6.5-1jpp_1rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
avalon-logkit-0:1.2-2jpp_4rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
axis-0:1.2.1-1jpp_3rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
classpathx-jaf-0:1.0-2jpp_6rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
classpathx-mail-0:1.1.1-2jpp_8rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
geronimo-specs-0:1.0-0.M4.1jpp_10rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
jakarta-commons-modeler-0:2.0-3jpp_2rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
log4j-0:1.2.12-1jpp_1rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
mx4j-1:3.0.1-1jpp_4rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
pcsc-lite-0:1.3.3-3.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-ca-0:7.3.0-20.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-java-tools-0:7.3.0-10.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-kra-0:7.3.0-14.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-manage-0:7.3.0-19.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-native-tools-0:7.3.0-6.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-ocsp-0:7.3.0-13.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
rhpki-tks-0:7.3.0-13.el4
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
tomcat5-0:5.5.23-0jpp_4rh.16
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
xerces-j2-0:2.7.1-1jpp_1rh
Fixed · RHSA-2010:0602
Red Hat Certificate System 7.3
xml-commons-0:1.3.02-2jpp_1rh
Fixed · RHSA-2010:0602
Red Hat Developer Suite V.3
tomcat5-0:5.5.23-0jpp_18rh
Fixed · RHSA-2009:1563
Red Hat Enterprise Linux 5
tomcat5-0:5.5.23-0jpp.7.el5_3.2
Fixed · RHSA-2009:1164
Red Hat JBoss Enterprise Web Server 1 for RHEL 5
tomcat5-0:5.5.23-0jpp.9.6.ep5.el5
Fixed · RHSA-2009:1454
Red Hat JBoss Enterprise Web Server 1 for RHEL 5
tomcat6-0:6.0.18-12.0.ep5.el5
Fixed · RHSA-2009:1506
Red Hat Network Satellite Server v 5.1
tomcat5-0:5.0.30-0jpp_16rh
Fixed · RHSA-2009:1617
Red Hat Network Satellite Server v 5.2
tomcat5-0:5.5.23-0jpp_18rh
Fixed · RHSA-2009:1616
Red Hat Network Satellite Server v 5.3
tomcat5-0:5.5.23-0jpp_18rh
Fixed · RHSA-2009:1616
| Product | Package | State | Advisory |
|---|---|---|---|
| JBEWS 1.0 for RHEL 4 | tomcat5-0:5.5.23-1.patch07.19.ep5.el4 | Fixed | RHSA-2009:1454 |
| JBEWS 1.0 for RHEL 4 | tomcat6-0:6.0.18-11.3.ep5.el4 | Fixed | RHSA-2009:1506 |
| RHAPS Version 2 for RHEL 4 | tomcat5-0:5.5.23-0jpp_4rh.16 | Fixed | RHSA-2009:1562 |
| Red Hat Certificate System 7.3 | ant-0:1.6.5-1jpp_1rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | avalon-logkit-0:1.2-2jpp_4rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | axis-0:1.2.1-1jpp_3rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | classpathx-jaf-0:1.0-2jpp_6rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | classpathx-mail-0:1.1.1-2jpp_8rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | geronimo-specs-0:1.0-0.M4.1jpp_10rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | jakarta-commons-modeler-0:2.0-3jpp_2rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | log4j-0:1.2.12-1jpp_1rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | mx4j-1:3.0.1-1jpp_4rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | pcsc-lite-0:1.3.3-3.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-ca-0:7.3.0-20.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-java-tools-0:7.3.0-10.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-kra-0:7.3.0-14.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-manage-0:7.3.0-19.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-native-tools-0:7.3.0-6.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-ocsp-0:7.3.0-13.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | rhpki-tks-0:7.3.0-13.el4 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | tomcat5-0:5.5.23-0jpp_4rh.16 | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | xerces-j2-0:2.7.1-1jpp_1rh | Fixed | RHSA-2010:0602 |
| Red Hat Certificate System 7.3 | xml-commons-0:1.3.02-2jpp_1rh | Fixed | RHSA-2010:0602 |
| Red Hat Developer Suite V.3 | tomcat5-0:5.5.23-0jpp_18rh | Fixed | RHSA-2009:1563 |
| Red Hat Enterprise Linux 5 | tomcat5-0:5.5.23-0jpp.7.el5_3.2 | Fixed | RHSA-2009:1164 |
| Red Hat JBoss Enterprise Web Server 1 for RHEL 5 | tomcat5-0:5.5.23-0jpp.9.6.ep5.el5 | Fixed | RHSA-2009:1454 |
| Red Hat JBoss Enterprise Web Server 1 for RHEL 5 | tomcat6-0:6.0.18-12.0.ep5.el5 | Fixed | RHSA-2009:1506 |
| Red Hat Network Satellite Server v 5.1 | tomcat5-0:5.0.30-0jpp_16rh | Fixed | RHSA-2009:1617 |
| Red Hat Network Satellite Server v 5.2 | tomcat5-0:5.5.23-0jpp_18rh | Fixed | RHSA-2009:1616 |
| Red Hat Network Satellite Server v 5.3 | tomcat5-0:5.5.23-0jpp_18rh | Fixed | RHSA-2009:1616 |
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: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 2, 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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 10.05% (0.10053) | 95.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.05% (0.10053) | 95.01th | v5 (v2026.06.15) |
| Jun 7, 2026 | 17.51% (0.17506) | 95.21th | v4 (v2025.03.14) |
| Oct 16, 2025 | 13.80% (0.13805) | 93.96th | v4 (v2025.03.14) |
| Sep 25, 2025 | 21.13% (0.21133) | 95.48th | v4 (v2025.03.14) |
| Mar 30, 2025 | 32.44% (0.32437) | 96.47th | v4 (v2025.03.14) |
| Mar 29, 2025 | 36.88% (0.36883) | 95.63th | v4 (v2025.03.14) |
| Mar 17, 2025 | 32.44% (0.32437) | 96.47th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.24% (0.02243) | 89.21th | v3 (v2023.03.01) |
| Feb 24, 2024 | 1.04% (0.01040) | 83.51th | v3 (v2023.03.01) |
| Jan 14, 2024 | 1.19% (0.01188) | 83.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.95% (0.00947) | 80.77th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.34% (0.07344) | 92.59th | v2 (v2022.01.01) |
| Jul 18, 2022 | 7.34% (0.07344) | 92.17th | v2 (v2022.01.01) |
| Jul 17, 2022 | 4.36% (0.04358) | 87.36th | 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 (59)
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Change history (0)
No recorded changes yet.