First published: Fri Jul 08 2016(Updated: )
Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue. NOTE: the vendor states "A mitigation is planned for future releases of Tomcat, tracked as CVE-2016-5388"; in other words, this is not a CVE ID for a vulnerability.
Credit: secalert@redhat.com
Affected Software | Affected Version | How to fix |
---|---|---|
maven/org.apache.tomcat:tomcat-catalina | >=8.0.0<8.5.5 | 8.5.5 |
maven/org.apache.tomcat:tomcat-catalina | >=7.0.0<7.0.72 | 7.0.72 |
debian/tomcat9 | 9.0.43-2~deb11u10 9.0.43-2~deb11u11 9.0.70-2 9.0.95-1 | |
Red Hat Enterprise Linux Desktop | =7.0 | |
Red Hat Enterprise Linux HPC Node | =7.0 | |
Red Hat Enterprise Linux HPC Node | =7.2 | |
Red Hat Enterprise Linux Server | =7.0 | |
Red Hat Enterprise Linux Server | =7.2 | |
Red Hat Enterprise Linux Server | =7.2 | |
Red Hat Enterprise Linux Server | =7.2 | |
Red Hat Enterprise Linux Workstation | =7.0 | |
HP System Management Homepage | <=7.5.5.0 | |
Red Hat Enterprise Linux Desktop | =6.0 | |
Red Hat Enterprise Linux HPC Node | =6.0 | |
Red Hat Enterprise Linux Server | =6.0 | |
Red Hat Enterprise Linux Workstation | =6.0 | |
Oracle Linux | =6 | |
Oracle Linux | =7 | |
Tomcat | >=6.0<=6.0.45 | |
Tomcat | >=7.0<=7.0.70 | |
Tomcat | >=8.0<=8.5.4 |
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CVE-2016-5388 has a medium severity rating as it allows for potential remote code execution due to improper handling of untrusted client data.
To fix CVE-2016-5388, upgrade to Apache Tomcat version 7.0.72, 8.5.5, or higher, or apply the respective patch provided by your software supplier.
Apache Tomcat versions 7.0.0 to 7.0.70 and 8.0 to 8.5.4 are affected by CVE-2016-5388.
Yes, CVE-2016-5388 can be exploited remotely if the CGI Servlet is enabled, allowing attackers to redirect applications.
Yes, CVE-2016-5388 is related to client data security, specifically regarding the handling of untrusted data in the HTTP_PROXY environment variable.