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CVE-2016-5385

8.1 · HIGH

PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY en…

Published Jul 19, 2016CWE-601EPSS 50.43%

Overview

CVE-2016-5385 is a high-severity vulnerability. It was published on July 19, 2016 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts 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, as demonstrated by (1) an application that makes a getenv('HTTP_PROXY') call or (2) a CGI configuration of PHP, aka an "httpoxy" issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-updates/2016-08/msg00003.htmlRefrhn.redhat.com/errata/RHSA-2016-1609.htmlRefrhn.redhat.com/errata/RHSA-2016-1610.htmlRefrhn.redhat.com/errata/RHSA-2016-1611.htmlRefrhn.redhat.com/errata/RHSA-2016-1612.htmlRefrhn.redhat.com/errata/RHSA-2016-1613.htmlRefwww.debian.org/security/2016/dsa-3631Refwww.kb.cert.org/vuls/id/797896Refwww.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlRefwww.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-5385?

CVE-2016-5385 is a high-severity vulnerability. It was published on July 19, 2016 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2016-5385?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-5385?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-5385?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-5385 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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