Description
The code in Apache Tomcat 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, and 6.0.0 to 6.0.47 that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack and/or obtain sensitive information from requests other then their own.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, 6.0.0 to 6.0.47, Earlier, unsupported versions may also be affected. | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | tomcat7 | 7.0.56-3+deb8u6 | DSA-3738-1 |
| Debian 8 | tomcat8 | 8.0.14-1+deb8u5 | DSA-3739-1 |
| Debian 7 | tomcat6 | 6.0.45+dfsg-1~deb7u3 | DLA-728-1 |
| Debian 7 | tomcat7 | 7.0.28-4+deb7u7 | DLA-729-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | tomcat6 | 6.0.45+dfsg-1ubuntu0.1 | USN-4557-1 |
| Ubuntu 16.04 LTS | tomcat7 | 7.0.68-1ubuntu0.3 | — |
| Ubuntu 16.04 LTS | tomcat8 | 8.0.32-1ubuntu1.3 | USN-3177-1 |
| Ubuntu 14.04 LTS | tomcat7 | 7.0.52-1ubuntu0.8 | USN-3177-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | tomcat6 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | tomcat +9 | 7.0.69-11.el7_3 | RHSA-2017:0935 |
| RHEL 6 | tomcat6 +8 | 6.0.24-105.el6_8 | RHSA-2017:0527 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat JBoss Web Server 3 | hibernate4-eap6 +4 | 4.2.23-1.Final_redhat_1.1.ep6.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss Web Server 3 | jbcs-httpd24-apache-commons-daemon | 1.0.15-1.redhat_2.1.jbcs.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss Web Server 3 | jbcs-httpd24-apache-commons-daemon-jsvc | 1:1.0.15-17.redhat_2.jbcs.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss Web Server 3 | jbcs-httpd24-runtime | 1-3.jbcs.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss Web Server 3 | mod_cluster +2 | 1.3.5-2.Final_redhat_2.1.ep7.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss Web Server 3 | tomcat-native | 1.2.8-9.redhat_9.ep7.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss Web Server 3 | tomcat-vault | 1.0.8-9.Final_redhat_2.1.ep7.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss Web Server 3 | tomcat7 +11 | 7.0.70-16.ep7.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss Web Server 3 | tomcat8 +11 | 8.0.36-17.ep7.el6 | RHSA-2017:0456, RHSA-2017:0455 |
| Red Hat JBoss EAP 6 | apache-cxf | 2.7.18-5.SP4_redhat_1.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | hornetq | 2.3.25-18.SP16_redhat_1.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | infinispan +4 | 5.2.20-1.Final_redhat_1.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | jboss-as-ee +59 | 7.5.13-2.Final_redhat_2.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | jboss-ec2-eap +1 | 7.5.13-1.Final_redhat_2.ep6.el6 | RHSA-2017:0250 |
| Red Hat JBoss EAP 6 | jboss-ejb-client | 1.0.38-1.Final_redhat_1.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | jboss-hal +1 | 2.5.15-1.Final_redhat_1.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | jbossas-domain +1 | 7.5.13-5.Final_redhat_2.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | jbossas-javadocs | 7.5.13-3.Final_redhat_2.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | jbossweb | 7.5.20-1.Final_redhat_1.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
| Red Hat JBoss EAP 6 | resteasy | 2.3.16-1.Final_redhat_1.1.ep6.el5 | RHSA-2017:0246, RHSA-2017:0245, RHSA-2017:0244 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | tomcat | 8.0.36-17.1 | SUSE-SU-2016:3081-1 |
| SLES 12 SP1 | tomcat | 8.0.32-10.13.2 | SUSE-SU-2016:3079-1 |
| SLES 12 | tomcat | 7.0.78-7.13.4 | SUSE-SU-2017:1660-1 |
| SLES 11 SP4 | tomcat6 | 6.0.53-0.56.1 | SUSE-SU-2017:1632-1 |
| SLES 11 SP3 | tomcat6 | 6.0.53-0.56.1 | SUSE-SU-2017:1632-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | tomcat | 8.0.36-17.1 | SUSE-SU-2016:3081-1 |
| SLES for SAP 12 SP1 | tomcat | 8.0.32-10.13.2 | SUSE-SU-2016:3079-1 |
| SLES for SAP 12 | tomcat | 7.0.78-7.13.4 | SUSE-SU-2017:1660-1 |
| SLES for SAP 11 SP4 | tomcat6 | 6.0.53-0.56.1 | SUSE-SU-2017:1632-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | tomcat6 | 6.0.53-0.56.1 | SUSE-SU-2017:1632-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | tomcat +9 | 7.0.69-11.el7_3 | ELSA-2017-0935 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Apache Tomcat 6/7/8/9 - Information Disclosure EDB-41783 · remote · Apr 4, 2017
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.tomcat:tomcat-coyote | >= 9.0.0.M1, < 9.0.0.M12 | 9.0.0.M12 | GHSA-jc7p-5r39-9477 |
| Maven | org.apache.tomcat:tomcat-coyote | >= 8.5.0, < 8.5.8 | 8.5.8 | GHSA-jc7p-5r39-9477 |
| Maven | org.apache.tomcat:tomcat-coyote | >= 8.0.0RC1, < 8.0.39 | 8.0.39 | GHSA-jc7p-5r39-9477 |
| Maven | org.apache.tomcat:tomcat-coyote | >= 7.0.0, < 7.0.73 | 7.0.73 | GHSA-jc7p-5r39-9477 |
| Maven | org.apache.tomcat:tomcat-coyote | >= 6.0.0, < 6.0.48 | 6.0.48 | GHSA-jc7p-5r39-9477 |
Advisories 21
- RHSA-2017:0456 Red Hat Security Advisory: Red Hat JBoss Web Server 3.1.0 security and enhancement update Red Hat Security Advisories (RHSA) · Oct 8, 2026
- RHSA-2017:0455 Red Hat Security Advisory: Red Hat JBoss Web Server 3.1.0 security and enhancement update Red Hat Security Advisories (RHSA) · Oct 8, 2026
- RHSA-2017:0935 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2017:0527 Red Hat Security Advisory: tomcat6 security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2017:0246 Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2017:0250 Red Hat Security Advisory: jboss-ec2-eap security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2017:0244 Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2017:0245 Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- USN-4557-1 tomcat6 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-3177-1 tomcat6, tomcat7, tomcat8 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-729-1 tomcat7 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-728-1 tomcat6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3738-1 tomcat7 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3739-1 tomcat8 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:3079-1 Security update for tomcat SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1632-1 Security update for tomcat6 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1660-1 Security update for tomcat SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:3081-1 Security update for tomcat SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2025-0215 Apache Tomcat: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 29, 2025
- WID-SEC-2024-0528 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 29, 2024
- ELSA-2017-0935 Moderate: tomcat security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 12, 2017
References
- RHSA-2017:0250 vendor-advisory
- 41783 exploit
- https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.0.39
- https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.0.M13
- 94461 vdb-entry
- DSA-3738 vendor-advisory
- https://tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.73
- RHSA-2017:0244 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- RHSA-2017:0935 vendor-advisory
- https://security.netapp.com/advisory/ntap-20180607-0001/
- RHSA-2017:0457 vendor-advisory
- RHSA-2017:0246 vendor-advisory
- 1037332 vdb-entry
- https://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.8
- https://tomcat.apache.org/security-6.html#Fixed_in_Apache_Tomcat_6.0.48
- RHSA-2017:0455 vendor-advisory
- RHSA-2017:0527 vendor-advisory
- RHSA-2017:0245 vendor-advisory
- RHSA-2017:0456 vendor-advisory
- RHSA-2017:0247 vendor-advisory
- [tomcat-dev] 20190319 svn commit: r1855831 [25/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ mailing-list
- [tomcat-dev] 20190319 svn commit: r1855831 [23/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ mailing-list
- [tomcat-dev] 20190325 svn commit: r1856174 [22/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20190325 svn commit: r1856174 [24/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20190325 svn commit: r1856174 [21/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20190413 svn commit: r1857494 [17/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ mailing-list
- [tomcat-dev] 20190413 svn commit: r1857494 [16/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ mailing-list
- [tomcat-dev] 20190413 svn commit: r1857494 [15/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ mailing-list
- [tomcat-dev] 20190415 svn commit: r1857582 [17/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20190415 svn commit: r1857582 [19/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20190415 svn commit: r1857582 [16/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ mailing-list
- [tomcat-dev] 20200203 svn commit: r1873527 [23/30] - /tomcat/site/trunk/docs/ mailing-list
- [tomcat-dev] 20200213 svn commit: r1873980 [27/34] - /tomcat/site/trunk/docs/ mailing-list
- [tomcat-dev] 20200213 svn commit: r1873980 [26/34] - /tomcat/site/trunk/docs/ mailing-list
- USN-4557-1 vendor-advisory