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

References

CVE-2016-5385

Related Vulnerabilities

MediaWiki Permissions, Privileges, and Access Controls Vulnerability (CVE-2014-9476)

Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2020-1692)

PHP-Fusion URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2020-23182)

PHP Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability (CVE-2008-2829)

Jenkins Incorrect Authorization Vulnerability (CVE-2020-2104)

Severity

High

Classification

CVE-2016-5385 CWE-284 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Tags

Missing Update Known Vulnerabilities