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CVE-2016-5388

UnknownEPSS 50.90%

Last modified

CVE-2016-5388 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 50.90% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
50.90%

98.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
RedhatEnterprise Linux Desktop7.0
RedhatEnterprise Linux Hpc Node7.0
RedhatEnterprise Linux Hpc Node Eus7.2
RedhatEnterprise Linux Server7.0
RedhatEnterprise Linux Server Aus7.2
RedhatEnterprise Linux Server Eus7.2
RedhatEnterprise Linux Server Tus7.2
RedhatEnterprise Linux Workstation7.0
HpSystem Management Homepage<= 7.5.5.0
RedhatEnterprise Linux Desktop6.0
RedhatEnterprise Linux Hpc Node6.0
RedhatEnterprise Linux Server6.0
RedhatEnterprise Linux Workstation6.0
OracleLinux6
OracleLinux7
ApacheTomcat>= 6.0, <= 6.0.45
ApacheTomcat>= 7.0, <= 7.0.70
ApacheTomcat>= 8.0, <= 8.5.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-5388?
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.
How severe is CVE-2016-5388?
Severity scoring for CVE-2016-5388 is pending analysis. The EPSS model estimates a 50.90% probability of exploitation in the next 30 days.
How do I fix CVE-2016-5388?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST